14 best panel meters

• Working voltage of Meter itself:DC 4 - 30V(The maximum input voltage can not exceed 30V. Otherwise the meter will be burned)
• Working current of Meter itself:≤20mA
• Display: 0.28" digital tube
• Voltage Measuring range: DC 0 - 100V
• Current Measuring range: DC 0 - 10A

User questions & answers

Question:	Once again, can the supply 'working' voltage come from the same circuit being measured, if the circuit voltage is less than 28V
Answer:	The bar shows one pulse beat and the strength. It is not a graph that shows over time.
Question:	How do I get the current to measure correctly when switching between the internal shunt and the external shunt
Answer:	I do not know but I thought that Amazon allows returns within 30 days. I bought one for my dad last May and he is using it daily since then without any issues
Question:	Where is the wiring diagram
Answer:	WOW great question ! I would not immerse it in any liquid alcohol or any liquid what so ever. A rag dampened with alcohol or a alcohol wipe that I use on my reading glasses might work for sanitizing the unit. It is an electronic device and who knows how well it is sealed from fluids.
Question:	Can the "supply voltage" be tied to the same "power supply" (black to black, red to yellow) without short-circuting
Answer:	The SM-240 is the better unit. It has a OLED multi-color display plus a Plesthymograph wave that measures pulse strength.

Product features

Wiring Diagram:

Package Included:

3pcs DC 100V 10A Voltmeter & Ammeter

Product description

Note:

1.The device should not be knocked or shaken.

2.Measures amper range of 0-30mA with accuracy of Class 2.5.

3.Clear and easy to read scale and a button for fine tuning the dial.

4.Needle Ampere Panel Meter for electronic applications, auto circuit or other Voltage measurement devices.



Specifications:

Product Name : Analog Amperemeter

Model : 91C4-A

Material : Plastic, Electronic Components

Measuring Ampere Range : DC 0-30mA

Accuracy : Class 2.5

Work Temperature : -20~+ 50C

Relative Humidity : 85%

Meter Panel Size : 1.7 x 1.7 x 1.3 inch / 45 x 45 x 35 mm(L*W*T)

Mount Size : 1.5 x 1.5 inch / 37.7 x 37.7 mm

Thread Dia : 2.5mm/0.1"

Color : White

Package Include: 2 x Analog Amperemeter; Several Installing Parts



Feature:

1.The covering of ammeter is made from transparent plastic

2.Apart from being used alone, it is used in the ancillary panel of the low- and high-tension switch board, power cabinet,and controlling house of the transmission and supply systems for DC power, and diverse electric control gears.

3.It is instilled with the bolt connecting onto the working platform.

• Size - Meter Panel Size(Approx) : 1.7 x 1.7 x 1.3 inch / 45 x 45 x 35 mm(L*W*T) ; Mount Size : 1.5 x 1.5 inch / 37.7 x 37.7 mm.
• Analog Current Panel Meter - Made of good quality plastic material and finished by good technology.
• Main Parmeter - Measures amper range of 0-30mA with accuracy of Class 2.5.
• Application - Needle Ampere Panel Meter for electronic applications, auto circuit or other Voltage measurement devices.
• Package Content - 2 PCS x DC Analog Current Panel Meter.

Product description

Main Specifications:



Recommended Cutout: 84.6mm(L)x44.6mm(W)x24.4mm(H)

Working voltage: DC 6.5 ~ 100V

Measuring Accuracy: 1%

Power Consumption: 0.2W

Measurement speed: 2 times/s

Store Energy data when power off. Can be reset to 0.

The blue backlight can be turned on/off manually



Test Range and Display format:



1. Active Power test range: 0~10kW

2. Energy test range: 0~9999kWh

3. Voltage test range: DC 6.5~100V

4. Current test range: 0~ 100A



Cautions



1. This module is only suitable for 6.5~100V DC power.

2. Applied load should not exceed the rated power.

3. Wiring order can not be wrong.

4. This module is suitable for indoor applications, please do not use outdoors.



Package includes:

1x DC 6.5-100V 100A Power Multimeter

1x 100A Current Shunt



Warranty:

1-year free replacement or full refund without return.

If the item you have received is defective in any way, please message us for free replacement or refund without return.

User questions & answers

Question:	I am getting the entire display blinking when i put any load on the system. it blinks all zeros. i have it set for 100a, but am less than 100A
Answer:	If your display is flashing or the reading seems out... (also if the reading stays 0 you probably have the wires from the shunt the wrong way round)The problem is the length of wires from where the shunt is (if it is not right next to the battery) causes a voltage drop across the cable that influences the reading and in most causes will cause the meter to flash as I suspect this is the over-read indication. (I am using three meters to measure two banks of solar panels and a wind generator)Solution: tie the battery side of the shunt wire to both 0v points on the meter . i.e. bridge the two inner pins of the connector and take the wire only to the shunt, this then takes the voltage drop over the cable to the battery out of the equation.
Question:	does this meter count up the amp hrs used and then start subtracting them when charging begins. Giving you a running total
Answer:	I bought two meters, so one measures charge, the other discharge. (Just wire the sensor wires in reverse for the discharge)
Question:	Very happy, what's the proper way to read the "energy" section of the panel? Is it real time or an average of watts per hr
Answer:	It is neither of those. The Energy section measures how much power you have used over time, i.e., the cumulative total of watt-hours. A watt-hour is equal to one watt of power used over the course of one hour. If you have a 5-watt LED bulb and you power it for 3 hours, your Power reading would consistently read 5 W for the whole time you're powering the bulb ("real time," like a speedometer), and the Energy reading would gradually change from 0 to 15 Wh over that 3-hour period (cumulative total, like an odometer).
Question:	Can you use a toggle switch to reverse the small gauge wires so you can read either draw or charge while under load
Answer:	FYI in the solution I offered above, it requires you to install the shunt for the charge circuit on the negative cable between your charging devices (all of them) and the negative post on the battery. The shunt for the load circuit should be on the negative cable between you negative battery post and the negative cable for you load panel. The load panel should have all your loads, both DC and inverter. The drawing that baylite provides does not show any dc loads. The common connection point should be the battery terminals. I hope that is clear.

User questions & answers

Question:	I I need higher voltage . Do you have?0-80 volts
Answer:	China
Question:	Noob: i have a split rail supply (+/- 3-20v). can i just reverse the black and red leads and use the white lead to measure the negative rail voltage
Answer:	Yes
Question:	Measure voltage is 0-30V. What power supply voltage is needed
Answer:	The bars continue to move and the readings will fluctuate slightly if you move around.
Question:	What is the current draw of this product
Answer:	On the side opposite to the controls, there is a heartbeat symbol and a WiFi symbol with a seam between the two. You can use your fingernail in the wifi symbol to pull the cover back.

User questions & answers

Question:	The led face ships with a clear plastic sheet. should this be removed, or is it intended to protect the display in use
Answer:	Yes, the carrying case has both a metal ring and a fabric loop for attaching to a belt.
Question:	Each five of these are reading 10.9 volts...my meter reader shows 11.75....whats wrong here
Answer:	Not sure, there is a red light. Mine works great, use it at work all the time
Question:	Do you have to use all three wires if it's the power supply you want to know the voltage of
Answer:	Thread the top of the lanyard (strap) through small hole drilled through back of oximeter. Note: Use the small loop of lanyard to thread through the plastic hole found where the oximeter is pinched open (not where finger is inserted). There are two holes drilled, so thread it through both holes and pull out the entire short loop through. Then take the short loop pulled through both plastic holes and open it so that the rest of the lanyard can be pulled through the short loop, thus securing the lanyard onto the pulse oximeter.
Question:	Can I read the voltage from the white wire and feed that to my Arduino
Answer:	This monitor is really designed to be read by someone other than the person wearing it, i.e. a nurse or doctor. To read it yourself as you're wearing it, you have to mentally rotate the numbers in your head. I will point out that the only picture on this product page showing the monitor on someone's finger, shows the display oriented to the wearer. That is either, a different model, or the photo has been "Photoshopped" and the display rotated 180 degrees. Regardless of which is the case, the photo is wrong and deceptive.

Product description

This meter can only be used with one-phase AC power. And it can only measure the active power(real power). It doesn't show Apparent power. For more information about the difference, please search AC POWER on wikipedia.



Main Specifications:



Working voltage: 80 ~ 260VAC

Working frequency: 50/60Hz

Measuring Accuracy: 1%

Power Consumption: 0.2W

Measurement speed: 2 times/s

Store data when power off.

The blue backlight can be turned on/off manually



Test Range:



1. Power test range: 0~22kW

2. Energy test range: 0~9999kWh

3. Voltage test range: 80~260V(single-phase)

4. Current test range: 0~ 100A



Cautions



1. Please make sure the AC input is Pure Sine Wave.(Municipal electric power is pure sine wave). Please don't use the meter to measure AC power converterd from a DC-AC inverter UNLESS you can make sure the output from your DC-AC inverter is Pure Sine Wave. This is very importatnt.

2. Applied load should not exceed the rated power.

3. Wiring order can not be wrong.

4. This module is suitable for indoor applications, please do not use outdoors.



Package includes:

1x AC Power Multimeter



Warranty:

1-year free replacement or full refund without return.

If the item you have received is defective in any way, please message us for free replacement or a full refund without return.

• The meter can only measure the active power(real power). It doesn't show Apparent power.
• Voltage test range: One-Phase 80~260V AC Power, 50/60HZ
• Store energy data when power off(can be reset).
• Large-screen LCD (display voltage, current, active power, energy at the same time).
• The blue backlight can be turned on/off manually.

User questions & answers

Question:	What is the hole size in CT
Answer:	NO.We don't have a AC meter which can measure up to 200A power.
Question:	What are the cutout dimensions? What panel thickness is max
Answer:	Yes, but note that the Watts and Watt-Hour readings will be inaccurate. The meter uses the voltage reading to determine watts and watt-hours. So you can monitor a 240V line with the unit powered off 120V. You just have to multiply watts and watt-hours by 2. I am doing this exact thing on my baseboard heater circuit. The heater is 240VAC but I don't have handy access to 240V to power the meter where I want to use it. So I plug it into 120VAC using an old power cord and multiply "power" and "energy" by 2 to get correct values.
Question:	Do you have a unit that can measure up to 200Amp
Answer:	Fuel must meet these requirements. Clean, fresh, unleaded gasoline A minimum of 87 octane/87 AKI (91 RON). Gasoline with no more than 10% ethanol is acceptable. Do not use unapproved gasolines, such as E85. Do not mix oil in gasoline or modify the engine to run on alternate fuels. This will damage the engine components and void the warranty, To protect the fuel system from gum formation, mix a fuel stabilizer into the fuel. Please refer to your owners manual for further instructions.
Question:	Can the meter be powered from a different circuit then the circuit that's being monitored
Answer:	I don't know of anyone converting, but would be interested in any response from someone who has. My home standby generator, Generac, is propane and I love it.

• 1.Digital Multimeter:This power energy meter can measure and display voltage current active power energy frequency and power factor at the same time.with split current transformer,more convenient to install .
• 2.Overload Alarm function:Backlight and power will flash simultaneously to give an alarm when exceeding the preset value.You can preset power limit by yourself.
• 3.Automatic Data Storage Function:The last test data is stored automatically when the power supply abruptly lose. Don't worry about data loss due to sudden power outages.
• 4.One-touch Control:The button can be used to control the backlight,reset energy, preset power alarm limit.
• 5.LCD Display:Large-screen LCD with all sight 180° view,The blue backlight can be turned on/off manually.

User questions & answers

Question:	For 240v install/Monitoring, instead of running a hot and neutral (black and white) to the display, can I run both black legs from 240v (120v + 120v
Answer:	Typically 6 to 8 seconds depending if there is good capillary refill (circulation).
Question:	does this work without having neutral wire? in many (old) houses in Saudi Arabia we use 2 x 110V = 220V, both live
Answer:	Yes, it comes with 2 AAA batteries
Question:	For 240v install/Monitoring, instead of running a hot and neutral (black and white) to the display, can I run both black legs from 240v (120v + 120v
Answer:	Mine does the same when I push the start button when my finger is out. Otherwise it is Black screen. When I put my Finger in, it reads just fine. I would say if it says finger out when your fingeris in , it would be defective.
Question:	Mostly to seller: is there a published communication module data description so we can write our own code to read the usb module output? or, an sdk
Answer:	Just set the stove timer for six minutes and wore it around the kitchen. Yes it will display for the full six minutes.

Product features

Main Function

1. Electrical parameter measurement function (voltage, current, active power, energy, frequency, power factor)

2. Overload alarm function (over power alarm threshold, backlight and power flashing to alarm).

3. Power alarm threshold preset function (can set power alarm threshold).

4. The energy can be reset use the key.

5. Store data when power off.

6. Large-screen LCD

7. Backlight function.

Display interface is large-screen LCD, it can display six parameters at the same time.

1. Power: test range: 0~22000W, Starting measure power: 0.5W

2. Energy: test range: 0~999kWh

3. Voltage: test range: 80~260V

4. Current: test range: 0~100A,Starting measure current: 0.02A

5. Frequency: test range: 45~65Hz

6. Power factor: test range: 0~1PF

Backlight Function

Blue backlight can be turned on/off manually,the last test data is stored automatically when the power aupply abruptly lose.

Comparison of Mutual Inductor

Open design is easy to use

Don't need to cut off the wire

product size chart

• PARAMETER --- measuring voltage DC 4.5V-100V; current 0-50A.
• APPLICATION --- monitoring storage battery, solar panel, model railroad, RV, motorcycle, house batteries, motor, etc.
• DISPLAY --- 0.39'' crisp and bright LED screen displays voltage & current value.
• CALIBRATION --- with voltage & current calibration potentiometer.
• NOTE --- the shunt should be connected when wiring, otherwise the meter will be burnt.

User questions & answers

Question:	Do you have this with a stronger 125 or 150amp shunt
Answer:	he is asking if vender has this device in 125 or 150 amp capacity i don't know if this vender has this model but they are for sale as i have got them be four
Question:	I just want to measure volts and amps coming in from my solar panels. Do you have any suggestions? Also do I need to connect the load to work
Answer:	The voltage will read out with our without a load. The amps only give you the current coming from your solar panel so if there is no load, the amps will be zero
Question:	So where do you connect the power source? I don’t find any connections
Answer:	Is the problem that you don't understand the schematic? The positive power source lead should go to the load (motor, etc). The shunt bar goes inline (it is part of the load circuit) on the negative lead back to the power source. After that, just hook up the display to the shunt bar - and one lead back to the power source positive - and you should be good. When you say you don't find any connections, it brings up different questions. Do you have both pieces shown in the listing pictures? Are you looking for answers on a digital voltmeter/ammeter? The only connections on these pieces are screw terminals. There should be a wire connection under every exposed screw. One more item - if the problem is the schematic, the one shown on the amazon listing in the pictures is cleaner than the one on the back of the display. Take a minute to look at it. Hope this isn't too simplistic. Your question makes me go down a couple of different roads. Good luck.
Question:	Power source? Does this run off the power of the circuit being tested or does it need a separate power source? Is it "self powered
Answer:	I just tested it with a 9v batt. it operate off of the circuit being tested.

Product features

LED display shows volt and amp

The multimeter can clearly display voltage and current at the same time, red for voltage, green for current.

Three terminals

DROK volts amp tester is equipped with three terminals. The power supply is taken from the test loop. No additional power supply is required.

A shunt 50A/75mV

The current range of the meter is 0.0-50.0A.

NOTE: If the current is higher than 20A, a shunt is required, otherwise the meter will burn.

Back cover

It's safer with the back cover

Product description

Features:

Operating voltage:DC 4.5 - 30V

Measure voltage: DC 0 - 100V

Minimum resolution(V): 0.1V

Measure current :10A (measure directly,built-in shunt)

Minimum resolution(A): 0.01A

Operating current: <20mA Display color: Red and Blue (two-color display)

Dimensions: 48 x 29 x 21mm

Mounting cutout: 45.5 x 26.5mm

Refresh rate: about 500mS / times

Measure accuracy: 1% (± 1 digit)

Operating temperature: -10 to 65° c

Operating Humidity: 10 to 80% (non-condensing)

Applications:Suitable for automotive/electric cars/motorcycles battery monitoring or other products voltage current measurement



Instruction： https://www.youtube.com/watch?v=PxAYUYZ_eaE Please watch the video before wiring



Instruction： https://www.youtube.com/watch?v=PxAYUYZ_eaE Please watch the video before wiring



Instruction： https://www.youtube.com/watch?v=PxAYUYZ_eaE Please watch the video before wiring



Instruction： https://www.youtube.com/watch?v=PxAYUYZ_eaE Please watch the video before wiring



Notice:

The voltage between the thin red and thin black lines must be within DC 4.5-30V

The ammeter can only be connected to the negative of the device under test

10A below ammeter (include 10A), built-in shunt, does not require external shunt

When the black thin line vacant, it is better to use insulating tape around the exposed part of the wire, to prevent short circuits

If just be used as a voltmeter, it is recommended that the yellow line and the black line were connected together, to prevent the ammeter digital flashing



Package include:

1x Digital Volt Ampere Meter

• Operating voltage: DC 4.5 ~ 30V; Size: 48mm x 29mm x 26mm
• Measure voltage: DC 0 ~ 100V;Minimum resolution (V): 0.1V;
• Operating Current: <20mA;Minimum resolution (A): 0.01A;Measure current: 10A
• Operating Humidity: 10 to 80% (non-condensing);Operating temperature: -10 to 65°c

User questions & answers

Question:	does this measure amp hours or just amps
Answer:	This is a clone of one of the 3 popularly manufactured versions. It depends on what you're measuring but the minimum on all 3 models require at least 4V in (I run them on 5V - 12V). There are tons of resources available for them, I recommend doing a search on ammeters.
Question:	The ammeter reads approlx 3X too high and the calibarton control does not have enought range to correct. Is this defectvie
Answer:	Best to use only the internal shunt, it will measure a lot of amps and is pretty accurate. Note the internal shunt is on the negative lead (output) so always only connect your load there for reliable measurements. The wiring information that comes with the devices is the correct way to use them. Make sure the output of your power source is isolated from ground (and green wire ground) or you may get a current loop and incorrect readings... especially if your load is connected to another ground.
Question:	What size cut-out does this fit? (Is there a mechanical drawing somewhere
Answer:	Hello.The wiring diagram can be found on the description page
Question:	There are two connectors, one is 2-pin and the other is 3-pin, what are the pinouts for them like which is used to measure voltage/current
Answer:	Supply Voltage refers to the energy required for this current voltage measurement meter to work.It is 4-28V. Power supply refers to the range of the current and voltage you can measure. This product cannot be used to measure high voltage current and voltage. Its range of measurement is 0-100V 0-10A。 So please follow the wiring diagram。

Product description

Product Parameters:

Dimensions:48mm x 29mm x 21mm

Measure voltage: DC 0-30.000V

Power Supply: DC 5-30V (Separate powered)

Input Polarity: DC voltage

Refresh rate: 5 times per second

Measurement accuracy: 0.3‰+ 2words (It means the table worst case maximum error of less than 10mv normal within error 2mv)

Display: five 0.36" digital LED Tube

Display Color: Green

Operating temperature: -10°c to 65°c

Temperature coefficient: less than 25PPM /°c

With Reverse polarity protection



Method of Wiring:

Red: Power Supply+ (DC 5-30V)

Black: Power Supply -, Measure -

Yellow: Measure +

NOTE:

The voltmeter needs isolated power supply. Power supply range is DC 3.5-30V. when black wire and red wire are switched to with the power supply, the voltmeter will display 0.000 (when the measuring line is dangling ,the voltmeter will display one or two base). Yellow wire and black wire will be switched to the measurement circuit. the measured voltage range is DC 0-33.000V.



Package Includes:

1x Digital LED Voltmeter

User questions & answers

Question:	How do you wire it if the power source and the battery are the same thing
Answer:	I'm sorry we don't have this meter of 80 volts. You can have a look on this meter: http://www.amazon.com/dp/B01DDQM6Z4. It can measure both current and voltage. But it can measure minimum voltage of 5 volts.
Question:	If this is panel mounted, what are the cutout dimensions
Answer:	Do not reverse black and red leads. These wires are the supply voltage to the meter's driver circuit. I power my meter with an 18650 battery, connected the black wire to the common ground of my solar power supply. The meter will read positive or negative voltage but does not display a (-) I measure voltage of different batteries and panels with the white
Question:	What is the input impedance of the voltmeter
Answer:	Power supply voltage is 2.8~30V.So if the voltage to be measured is less than 2.8V, you need to use a separate power source to power the meter.
Question:	When left on continusoly 24/7, how long is the life span of the readout
Answer:	Just ran a test with my multimeter and its drawing 12.3mA @ 4.2V from a fully charged lithium battery.

Product description

Main Specifications:



Measurement Range: + -100A

Measuring Accuracy: + -1%

Resolution: 0.3A

Working current: 7-15mA

Power supply: DC 5-120V

Overall Dimensions: 48mm*29mm*23mm

Cutout size: 45.5mm*25.5mm

Sensor hole diameter: 19mm

Operating temperature: -4°F - 140°F (-20°C - 60°C)

User questions & answers

Question:	Does the amperage reading or accuracy vary based on the power supply voltage? I have 2 6v batteries in series so I can provide 6 or 12 volts
Answer:	Yes. It come with battries. Thank you!
Question:	can i use with cable AWG
Answer:	Can not friend, this gauge can measure the non-metallic coat or paint thickness on iron/aluminum/car steel only
Question:	Is there a 150 or 200 amp capacity available
Answer:	I suppose you could use a resistor if you wanted to calibrate it for a particular voltage. Mine reads plenty accurate for what I'm doing, and agreed with another brand I have right out of the box.
Question:	Could the sense cable be extended to ? 50 feet. Does cable need to be shielded? Would cat5 work
Answer:	Voltmeter has 2 wires- red n black., connect to 12V battery - Red wire to positive and Black wire to Negative.

Product description

Keep your own eye on your electricity. Home Energy Meter Gen5 from Aeotec is the easy way to monitor and record all the electricity being used and spent in your entire home and report that data back to your Z-Wave system. It converts your current electricity into something it’s not: a tool that provides you with understanding. Understanding of how much electricity you’re really using. Understanding of when you’re using it. Understanding of how you can use less and of how you can save more. Simply installed, Home Energy Meter Gen5’s current clamps affix around your home’s AC Mains and record electricity use, wirelessly reporting wattage and kWh electricity usage in real-time. Made for for indoor or outdoor use, this electricity monitor is IP43 rated and can operate in most weather conditions. Built using Aeotec’s Gen5 and Z-Wave Plus architecture, compared to previous models it offers a superior wireless range necessary for a device that is often installed outdoors or within a metallic current breaker box. Home Energy Meter Gen5 is compatible with all certified Z-Wave gateways including Fibaro, HomeSeer, and Vera.

• Keep track of real-time electricity usage with 99% accuracy that reflects how much energy is costing you with this wireless Z-Wave Plus monitor (max 492 feet wireless range).
• Each box comes with 1 monitor and 2 clamps to detect two separate loads, each clamp meters up to 200 amps under 120 voltages.
• The monitor connects to mains power of the 2 phases system in the electricity box, as such a professional electrician may required for installation.
• Compatible with certified Z-Wave gateways including: SmartThings, Indigo 7, Home Seer, Vera, Open Z-Wave, Open HUB, Zipabox, Qolsys IQ Panel, Home Assistant and more.
• Z-Wave Plus certified for quicker response time, better wireless range up to 490 feet in open space, and additional wireless security encryption. Certification number: ZC10-15040002.

User questions & answers

Question:	How can i ask for a zw095 to support eu frequencies and 230v? does this product support it or how can i order one
Answer:	Yes, this records the total power used by the device whether it is on or off or any mix. You just need to go to the screen kwh used. record the beginning # and at the end of time period (say 24 hours) record the end #. that is how many kwh it used. I used several of these for months to record the A/C use in our shared apt and paid the landlord for the a/c used so they don't complain about my electricity used. great device. now however, my apt has a 20a a/c wall unit. while you could get converter to regular 3 prong, not sure if this unit will go to 20 amps.Others who said no are simply ignorant of this devices menu. It ALSo shows, when on watts menu, the watts used when a device is running, or is off. so you can see how much your a/c or toaster oven or giant screen tv uses when on, or off.It also keeps the power kilowatt hours used even if unplugged or power goes out in its internal memory. so you can simply record the kilowatt hours at the begin of a month, then at the end of the month, subtract and multiply by your cost of electricity for the total $ / month the device uses.The dork who was our landlord at the time thought his electric water heater for tea was less expensive to use than nuking a cup of water for a minute to heat it up in the microwave. popped this device on it and they were almost identical in total power used to heat a cup of water.The same idiot who was complaining about this left his rear projection tv on when he wasn't around, and they use alot more electricity than today's flat panel screens.If you want to record the power usage of some device over time, you'll want to plug this device into a short extension cord. if you plug it directly into the wall then you have to lie down on the floor to read the kilowatt readings. I just put the readings into a spreadsheet when I was recording monthly electricity usage.
Question:	If installed inside the breaker panel, how is it possible for the device's Zwave RF signals to pass though the panel's solid metal construction
Answer:	This EZ model does NOT display how many Watts you device is pulling... It displays how may kwh have been used thus far, to the 1/10th decimal place. So, when you first plug something in is shows ZERO, since not enough time has passed to show kwh used yet. This is a HUGE feature left off this device. For me, I want to plug something in to a meter like this and be able to instantly see how many Watts the device uses, and this EZ meter version does not do that.
Question:	Does this need a memory card to store data? Can you monitor data over a period of months or just real time
Answer:	Thanks for your question. It is about 19cm long. Hope it can help you.
Question:	What is the difference between Gen 2 and Gen
Answer:	Very minimal. Uses a very small gauge signal wire, hardwired into line voltage. Advise contacting the vendor for a complete spec sheet.

Product features

200-amp max measurement.

Home Energy Meter from Aeotec is the smart meter where you own and control the data. It’ll record your home’s electricity use in real-time and up to 200 amps at once.

99% Accurate.

With 99% accuracy, Home Energy Meter measures your home’s electricity use in watts or kilowatt-hours.

Up to 328 feet wireless range.

Utilizing Z-Wave Plus and Aeotec’s Gen5 firmware, Home Energy Meter offers wireless connectivity that is optimized to transmit wirelessly up to 328 feet in open areas.

Crafted for the US, 2-Phase electrical system.

This edition of Home Energy Meter comes with 2 clamps and 1 monitor to connect with a 110 volt, US standard electrical system. Each clamp detects one load / circuit and reports the real-time power consumption to your Z-Wave smart home control gateway. It’s wirelessly transmitted and encrypted using banking-grade AES-128 encryption. Your data is stored by your Z-Wave hub. You own it and you can analyze it.

Know how much you spend.

Monthly power bills typically go in one direction: up. Home Energy Meter helps you reverse that trend. With 99% accuracy it measures your home’s electricity use in watts or kilowatt-hours. Paired with your Z-Wave gateway, it’ll help you diagnose which electronics in your home are costing you the most. Whether it’s your lighting, your appliances or anything else, you’ll then be able to take actionable steps to reduce how much those electronics are costing you.

Product description

Single-phase AC

Power supply: AC 24-500V

Testing range: AC 0-100A

Refreshing time: about 200ms/times

Size: (length) 51mm x (φ)29mm/2"x1.14"

Install opening: (φ)22mm/0.9"

Height of the display digit: 11mm/0.4"



How to use:

Let one lead from the load go through the current transformer



Package include:

3 x Amperage Testers

• AC 0-100A mini & light weight digital ammeter signal indicator, high brightness LED display and cylindrical main body
• Size: (length) 51mm x (φ)29mm/2"x1.14"; Install opening: (φ)22mm/0.9"; Height of the display digit: 11mm/0.4"
• Built-in screws for wiring, safe and convenient in usage, durable and firm comstruction which good for long-time woking
• Power supply: AC 24-500V; Come with a current transformer with 32mm outer diameter, connected with 335mm lead
• Great for electricity, telecommunications, machine tools, ships, printing and other equipment signal indicating and amperage displaying

User questions & answers

Question:	Does this light up only when there is >0 amps? Or does the display show 0 amps when the measured circuit has no draw
Answer:	The plastic bag is used to protect the voltmeter during shipping. Please remove it when using.
Question:	Is this csa approved or ul stamped
Answer:	The Measurement Accuracy of this meter is 1% (+ / - 2 digit) . If you can make sure that the accuracy of your meter is better, you can calibrate the meter with the potentiometer on the back.
Question:	Has anyone used them on 110 vac
Answer:	Yes. Red is positive, black is negative ( to supply power the unit), and white is the load. (What you want to measure). So if the battery is what you want to measure, just strip the red and white wires and twist them together prior to soldering. That should give you a valid battery meter. I've done this myself, just make sure that you install this unit after the on/off swith (between switch and whatever device you're powering). Otherwise it will act alone and always stay ilon
Question:	Will this unit read in milliamp range
Answer:	I can't make sure how you want to feed it to your Arduino. But you can see the following detailed wiring method of this voltmeter. Wiring: Red wire: Power supply + Black wire:Power supply -, Measured Voltage - White wire: Measured Voltage +

Product description

specifications

Volumn:64.5mm x 56.5mm x 48.8mm/2.54inch x 2.22inch x 1.92inch(L*W*T)

Model:85C1

Net Weight:76g

Working Range:DC 0~5V

Graduation: 0.1V

With blots and screw for fixing.



Package Content:1 X  Voltage Gauge

• Made of high grade ABS plastic, durable and sturdy
• Range: DC 0 to 5V, 0.1V graduation
• 2.54 x 2.22 inches for front panel, 2.68 Oz weight
• 2.5 accuracy class(Error Margin= +/- 2.5%)
• The Shunt resistor is Not Required

User questions & answers

Question:	How much current does it consume at 5V
Answer:	Note: amazon is showing this question on products that don't have Modbus. PZEM-014/016 is the module you want for PC only interface, PZEM-022 for display only.