13 best hydrofarm light meters

Product description

Hydrofarm lg17010 digital light meter, This product is a precision instrument used to measure luminance (foot-candles). The meter is fully cosine corrected for the angular incidence of light, meaning that if you are not holding the sensor perfectly perpendicular to the light source, the sensor will still read the light correctly. The sensor is stable and made of a long-life silicon photo diode. The digital light meter accurately measures to 40,000 FC. The meter’s built-in low battery indicator means you’ll never be caught by surprise by a low-power product.

• Measures grow lights or sunlight
• Measures up to 40,000 footcandles
• 3 scales for precise readings
• Convenient hand-held remote sensor
• Lifetime silicon cell (Lithium 3V CR2032) - includes informative booklet with lighting recommendations

User questions & answers

Question:	Will this work for a ceramic metal Halide grow light
Answer:	I believe so yes it just will not work on LED or anything that you're trying to test the par. This thing is all over the place though it's more like a science project quality in my opinion
Question:	What to do if meter is stuck at 3901 even in pitch black
Answer:	Return it! It's an unadulterated piece of crap; and had you read my review, that would have been made all too clear . . .
Question:	What kind of meter should you use for LED lights
Answer:	There are meters made specifically for LED lights. You can find them by including LED in your search term. They are more expensive than this one but essential if you use LEDs.
Question:	I want to know if this product helps me to measure light from a team of HPS and MH grow lights 600w specifically
Answer:	I've used it with T5's and 1000 watt MH and HPS bulbs and it works with them.

Product description

Photosynthesis and plant growth depend on the sun or specially designed lighting systems. But of that light reaching the plant, only specific types of energy (in the lighting spectrum) drive the photosynthesis process. Since light is the most important single factor affecting your plants' life cycles, quality light meters are an essential tool in determining accurately if your crop is receiving the maximum light needed for healthy growth. A light meter allows commercial growers an accurate means of adapting to their plants' needs as the light conditions change during a full growing season. Identify best light level of healthy plants. Easy to use hand-held design. Get precise reading with two scales. Includes instructions and "Consumer's Guide to Light Gardening" brochure. Lifetime silicon sensor - no batteries required. Read up to 5000 footcandles of sun, high intensity or fluorescent light. Exclusive "Zero" calibration feature - accurate to 2%. Full two year - the longest in the industry.

• Designed help you grow plants, flowers, and food bigger, healthier, and better
• Gives a precise reading with two scales
• Accurate within +/- 2%
• Lifetime silicon sensor -no battery
• Easy to use, hand held design

User questions & answers

Question:	If it doesn't have battery, how does it work
Answer:	I would not know because the one i ordered did not work.

Product description

Note: Before you place order, please kindly note that you purchase this light meter from our store Thousandshores Inc instand of other seller, they are not authorized by Dr.meter and may not ship the item to you after receive the money, we want to save your loss.

Dr.Meter

The Digital Light meters are used in the fields of cinematography and scenic design, in order to determine the optimum light level for a scene. They are used in the general field of lighting, where they can help to reduce the amount of waste light used in the home, light pollution outdoors, and plant growing to ensure proper light levels

Specifications

-Display: 3-1/2 digit 18mm LCD

-Power: 9V battery

-Ranges: 0.1-200/2,000/20,000/200,000 Lux

-Accuracy: ±3% ±10 digits (0-20,000 lux) / ±5% ±10 digits (over 20,000 Lux)

-Repeatability: ±2%

-Temperature Characteristic: ±0.1%C

-Photo detector type: Silicon Photo Diode with Filter

-Operating temperature: 32-104 degrees F (0-40 degrees C)

-Sampling rate: 2-3 times per second

-Battery life: 200 hours (estimate)

-Dimensions: 149 x 71 x 41 mm

-Photo Detector Dimensions: 100 x 60 x 28 mm

Package Content

-1 x Dr.Meter 1330B Light Meter

-1 x Carrying case

-1 x 9V battery

-1 x User manual

• ▶【4-Range Settings】: This high-quality digital illuminance/light meter has 4-range settings, 0/200/2,000/20,000/200,000 Lux, for a dynamic metering ability.
• ▶【High Accuracy】: With auto zeroing capabilities, you can be sure you'll always get a reading with pinpoint accuracy, and it will always be fast!
• ▶【EZ-Read Display】: Clearly readable info lets you read Units and Signs easily, and stay informed with the over-range indicator.
• ▶【Convenient Switches】: Get better control over your readings with Data Hold & Peak Data hold for when you're recording information. You'll also benefit from its lower power consumption and short rise and fall times.
• ▶【Bring Anywhere】: From squeezing into tight places to keeping your load light, you can bring the Dr.Meter Digital Illuminance/light meter wherever you need to. Fits easily into a work bag or large pocket and barely adds any weight. It's the ultimate in light-metering convenience!

User questions & answers

Question:	Who manufactures the meter
Answer:	The name listed on the case, and the meter itself, is "Dr. Meter", and it is titled as "Dr. Meter Digital Illluminanc...B, O-200,000 Lux Luxmeter" model LX1330B. It shows a URL of "http.//www.drmeter.com". It was mfg. in China, but a USA contact is "Dr. Meter, 30075 Ahern Ave., Union City, Cal., 94587, w/ a phone number of #510-477-0249, & Fax as #510-477-0749.
Question:	Can this measure LED grow light
Answer:	Tl;dr is at the bottom because I have a lot of details. It can, but it is not recommended. Lux meters like this are designed to measure the intensity of visible light, which generally assumes you are measuring white light perceived by humans. What matters for plants (so what matters for your grow light) is Photosynthetic Active Radiation, PAR. PAR is a measurement of how many light particles, or photons, pass by a given point. This means that PAR will also get smaller the further you move from the light because it has dispersed more. Because PAR is much more difficult to measure than ambient light, it is much more expensive, generally in the $300-500 range. I would recommend either checking if your grow light has documentation on it's output in PAR, or contacting the manufacturer to ask. If they do not have this information, then follow their guidelines on how far to place the light relative to your plants. Tl;dr: Lux is not a good measurement for LED grow lights. See if you can find information about the light's output measured in PAR. Source: I designed an LED Grow Light and had to do all this research to figure out what to measure for it.
Question:	Yes this a goodlight meter for photographers
Answer:	I would not use it for photography. There are many better meters to use for that purpose. This meter is made for measuring foot candles and such and is useful for comparative light levels. Gossen or other photo meters would do better and be directly viewable with the scales on such a meter.
Question:	I want to measure light pollution from out door lighting. Need accuracy below 1 lux eg (0.1 to 1 lux
Answer:	From the instruction manual:Light-measuring levels ranging from 0.1 lux to 200,000 lux with auto zeroing and corrected for luminous efficiency function (manually calculated for non-standard light sources).Accuracy is described as: +- 3%+10dgt with a repeatability within 2%.ChuckJ

Product features

Specifications

-Display: 3-1/2 digit 18mm LCD

-Ranges: 0.1-200/2,000/20,000/200,000 Lux

-Accuracy: ±3% ±10 digits (0-20,000 lux) / ±5% ±10 digits (over 20,000 Lux)

-Repeatability: ±2%

-Temperature Characteristic: ±0.1%C

-Photo detector type: Silicon Photo Diode with Filter

-Operating temperature: 32-104 degrees F (0-40 degrees C)

-Sampling rate: 2-3 times per second

-Battery life: 200 hours (estimate)

4 Range Settings

Equipped with 4 settings of?0/200/2,000/20,000/200,000 LUX, this digital illuminance meter can cover a dynamic application in daily life, industrial and other lighting occasions.

Premium Light Sensor

Thanks to the advanced photosensitive sensor technology, you can get more stable and accurate readings than ever!

Flexible Coil Cable

Compared with those meters with fixed or rotatable sensor, the 1330B LUX meter adopts flexible coil cable so that you can just stretch or twist the cable to conveniently reach any measuring spot.

Detachable Case

As a bonus, we provide a detachable case with stand for this light meter that effectively prevents slippery and stains and also gives enjoyable, hands-free operation.

• ★【Professional LED Light Meter】: Whether you're a set designer, or looking to set the mood, proper lighting is a must. The Dr.meter Digital LED Light Meter measures the brightness (up to 200,000 lux) of fluorescent, metal halide, incandescent, and high-pressure sodium lights, guaranteeing the perfect luminosity every time.
• ★【Ultra Fast, Ultra Precise】: A split second is all it takes for an accurate reading. An advanced built-in calibration sensor measures the light levels at a super fast, twice per second speed.
• ★【Easy and Intuitive】: Using this digital LED light meter couldn't be easier. Just turn it on, point it at the light source, and check out the reading on the display screen. There are 4 adjustable measuring ranges (200lux, 2,000lux, 20,000lux, 200,000lux). Preprogrammed settings like auto power off, data hold, unit adjustment, and more do the hard work for you.
• ★【270 Degree Rotatable Detector】: Keep an eye on the light level anywhere in the room. The optical detector rotates a full 270 degree for muti-directional detection.
• ★【Tripod Mountable】: Have your hands full? Don't sweat it. Thanks to the screw base design, this LED light meter can be placed on a tripod for hands-free use.

User questions & answers

Question:	Is this good for industrial settings to test if sufficient lighting is available
Answer:	Yes, this light meter could be work for industrial settings to test if sufficient lighting is available. Thanks!
Question:	Does this measure temperature in K as well as Lux
Answer:	Measures in Lux and foot-candles only. It does not measure light temperature.
Question:	Can it measure tv lumens
Answer:	Yes, it can measure tv lumens. Thanks!
Question:	can you set ISO on this meter to calibrate with camera/lights for photography studio
Answer:	Sorry, it can not. Thank you!

Product features

4 Adjustable Ranges Allow for More precise measurement

LUX: 200lux, 2,000lux, 20,000lux, 200,000lux

FC: 20FC, 200FC, 2.000FC, 20.000FC

270 Degree Rotatable Sensor

No need to move around-the rotatable sensor provides easy, muti-directional measurement from anywhere in the room.

Data Hold

Use the data hold setting to keep track of important measurements you'll need to revisit later.

Grab and Go Carrying Case

Toss the LED lux meter in the included zipper pouch for protection and storage.

Product description

★★Specification of 881D Lux meter light meter:

• Measure Range: 0.1Lux ~ 400,000Lux
• Accuracy: ≤20,000 LUX/2,000FC: ±4%rdg ±0.5%f.s

                 >20,000 LUX/2,000FC: ±5%rdg±10dgt

• Recolution: 1 LUX
• Repeatability: ±2%
• Temperature Characteristic: ±0.1%℃
• Sampling Time: 2 times/s
• Display: 3999

 

★★Function of 881D Lux tester Lux meter light meter:

✔Data hold

✔Back light

✔Max hold

✔Min hold

✔Relative value

✔Data storage

✔Enviroment temperature display

✔Bar graph display

✔Lux/FC selection

 

★★General Features of Function of 881D Lux tester Lux meter light meter:

• Battery type:1.5V(AAA)x2
• Dimension:173x52x30mm
• Weight: 155g

 

★★Package Including：

1 * Digital LUX meter

2 * 1.5V(AAA) battery

1 * Black zipped case

1 * User Manual

 

• 🔸【High Accuracy】This light meter can accurate measure luminance at 0.1-400,000Lux(FC switchable).High accuracy:+/-4% of reading(20,000Lux).High response speed with 2 times/sec,resolution up to 1 lux.
• 🔸【270° Rotatable Detector】The light sensor can rotate 270°! It is easy to adjust to the direction you want to measure.No need to turn around the lux meter to measure lighting from different angles. Multi-directional measurement from anywhere.
• 🔸【Multifunction Photometer】Max/Min reading display and analog bar graph display.[HOLD] function for you check readings easily.Large LCD screen with backlight,easy to read even in darkness.Except lighting, environment temperature(℃/℉) can be also test.Low battery indication and auto shut down after 10 mins to save your battery.
• 🔸【Log the Lighting Data】This handheld digital illuminance meter can keep 33 sets of data logging.Press “REC” to record current reading, LONG PRESS “REC ” to log the lighting data constantly.Convenient to measure light level in various areas at various time,so you can compare analyse if the lighting is suitable for your plants, greenhouse, office,photography, etc.
• 🔸【Easy to Use】Using this digital LED light meter couldn't be easier,just turn it on,point it at the light source,and check out the reading on the display screen.Come with black carrying case,make the foot candle meter easy to carry.With [REL] button can auto zeroing capabilities, helping you to obtain more accurate measurement.365-DAY warranty.

Product description

Hydrofarm Analog Light Meter

• Great accessories for your growroom
• Backed by manufacturer’s warranty
• Another great item from Flora Hydroponics

Product description

Dr.Meter

The digital lux meter Dr.Meter LX1010B can measure up to 100,000 lux, or, approximately 10,000 footcandles. It is used for checking the level of luminance, the measure of the amount of light falling on a given surface.

Features

- LCD Display

- Highly accurate and responsive

- Auto Zeroing

- Over-range indication

- Data Memory

- Low battery alert

Specifications

- Display: 3-1/2 digit 18mm LCD

- Power: 9V battery

- Ranges: 0 - 100,000 Lux

- Accuracy: ±5%

- Sampling rate: 0.4second

- Operating temperature: 32-122 degrees F (0-50 degrees C)

- Battery life: 200 hours (estimate)

- Dimensions: 4.6x2.7x1.1 inch (118x70x29mm)

Package includes

- 1 x Lux meter DM-LX1010B

- 1 x Carrying case

- 1 x 9V battery

- 1 x User manual

• ▶【Easy-Read LCD】: Whether you're in a bright sunny field or in a tight space, you can always read the Dr.meter Digital Illuminance/Light meter thanks to the large 18mmLCD display with 3-1/2 digits of info.
• ▶【Large Range】: Whatever you're measuring, you can be sure that this light meter will capture it, as it has a wide range of 0 - 1000,000 Lux for any scenario.
• ▶【Accuracy】: Get the right reading every time. You can rely on this digital illuminance meter to always read within a +/-5% range.
• ▶【Quick Reading】: With a speedy sampling rate of 0.4 seconds, you'll never be stuck waiting for your reading to come through.
• ▶【Long Battery Life】: Powered by a 9V battery, this unit has low energy requirements and will last you for a long time out in the field without needing a change.

User questions & answers

Question:	Can this mesure the out put from a flsahlight ? As in # of lumens
Answer:	I have learned that there is now hand held equipment to measure lumens. I understand that the factory must use special scientific equipment to determine output.
Question:	Is this the kind of meter where you put in the ISO and can get an aperture setting recommendation, or is it just telling you lux
Answer:	You can convert Lux to Camera Settings for ISO 100 using this spreadsheet: http://accessz.com/tools/Lux-to-Camera-Settings.xlsx
Question:	Will it work on ranges 0.0 to 1 lux
Answer:	I have the operation manual that came with it. It claims resolution of 1 lux and Accuracy in range of ≤10,000Lux:±4%rdg±0.5f.s. In the manual it actually also says that the range is 1-50,000Lux, so it seems from this info that even if some numbers are being shown, you could not believe their accuracy. Might be good for relative measurements, it all depends what you want to use it for and if you are interested in accurate or comparative measurements.
Question:	I want to see how many lumens of light is in my garage, will this tool tell me exactly how many lumens are present?: IE: 24,000 lumens ...etc
Answer:	No. Lux is not lumens. Lux is the measure of light intensity, lumens is amount of light production. Its like lux is water pressure in a pipe, whereas lumens is flow rate in the pipe. You can convert though, lux is lumens per sq meter. If you know how much sq meters is your room (all 6 sides) you can do the math to convert lux to lumen. If you arent good with metric, use familiar units and do the conversion last.

Product description

Product Description: HM Digital's PH-200 is a digital waterproof pH meter (aka pH tester or pH pen) that is ideal for all pH testing, water purification applications, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers, water treatment, wine, coffee, agriculture and more. It is fast-acting, features amazing results and perfect for the hobbyist to the laboratory professional.

• plastic
• Imported
• Measures pH and Temperature, Range: 0-14 pH, 0-80 °C, 32-176 °F
• Autoranging three point calibration with digital fine tuning
• Waterproof housing (IP-67 rating)
• Includes storage solution in a sponge embedded in a clear cap
• Auto-off function, data-hold function and low-battery indicator

User questions & answers

Question:	Is this meter appropriate fow wine
Answer:	I've been using it for beer pH measurement so wine should be fine.
Question:	What is the operational temperature range
Answer:	I use it for adjusting brewing water, so the range I've use it is from 45F to 165F.
Question:	is this meter pre calibrated out of the box
Answer:	Yes.....any bottled water that has been treated with the Reverse Osmosis (RO) has a PH of 7 .......Read the Label for (RO).....so it's an easy and cheap check.......
Question:	Which storage solution is best to use for this product? Also how often do you have to change storage fluid
Answer:	There is hm ph electrode storage solution you can get...there is a sponge in the cap of this ph meter that you dont want to let dry out.

• ☀【HIGH ACCURACY】+/- 4% readings +/- 0.5% f.s (10,000 Lux; 1,000 FC); +/- 5% readings +/- 10 digits (300,000 Lux; 30,000FC)
• ☀【0.4 SECOND RESPONSE】2~3 times sampling per second, Instantly to measure out how much lights you’re getting
• ☀【WIDE MEASURE RANGE】 This light meter can measure luminance at 0.01~300,000 Lumens, (0.01~30,000 Foot Candles), Which is much wider than the others. Resolution 0.01
• ☀【EASY TO USE】The light sensor can be rotated 270º, so you don’t need to turn around the light meter to measure lights from different angles. Just rotate the sensor, and you can still read the measure at front
• ☀【MEMORIZE THE LIGHT READINGS】This Lux Meter can help you record 33 sets of readings,Temp Testing, The RELATIVE measuring mode will show you the difference between current / recorded data. Ideal to use at home, garden, aquarium,plants, school, office, state, LED lights, indoor and outdoor

User questions & answers

Question:	Can you measure how bright a light source (such as an led light) with this while other lights are on by turning on and off the source? thanks
Answer:	Thanks for the question. Yes, BT-881D can measure light intensity in Lux and Foot Candles. The meter is very sensitive, we'd suggest you turn off the other light source to measure the ONE you wanna test.
Question:	can this meter measure outdoors areas where there is very low light from nearby street lights
Answer:	Yes it can
Question:	What is the spectral sensitivity of this sensor? It is integrating wavelengths, what is the bandwidth of frequencies it covers? thanks
Answer:	Lux meter mostly cover green light. You need a par meter is f you want to measure outside of green wavelengths.
Question:	What is the difference between this and the 881e aside from lux range
Answer:	Hi, thanks for the great question. Only the lux range are different, the other functions and appearance are all the same.

Product features

BTMETER BT-881E Auto-ranging Light Meter

• Thanks to the Silicon Photo Diode with Filter, the BT-881E Lux meter can take accurate lumens reading for LED lights, grow lights, sun light.
• Forget speculating, know exactly the changing of luminosity power from the distance indoors, outdoors, in the greenhouse, for plants, Orchids.

REMINDER:

This is NOT a pro photography light meter, after given the basic lux readings, you’ll need to do some maths to find your shutter speed and aperture.

LED Grow Lights Meter

Not sure how much light that your plants are getting?

This BT-881E lux meter can help you measure the luminosity accurately, so you can adjust the lights accordingly

Lux Meter for Sun Light

Comes with a zippered fabric storage bag for you to measure the light level around, in your green house, bedroom, and outdoor activities.

Plant Light Meter

Except measuring the lights in Lux, FC, this light meter also built in a thermometer to show you the ambient temp of your plants.

Lumen Meter for Photography

It’s easy to use and provides you basic lux reading to help you take amazing photos, let you know if the light’s enough.

Product description

This product is a precision instrument used to measure luminance (footcandles). The meter is fully cosine corrected for the angular incidence of light, meaning that if you are not holding the sensor perfectly perpendicular to the light source, the sensor will still read the light correctly.

The sensor is stable and made of a long-life silicon photo diode. The digital light meter accurately measures to 40,000 FC. The meter’s built-in low battery indicator means you’ll never be caught by surprise by a low-power product.

Features

• Measures grow lights or sunlight
• Measures up to 40,000 footcandles
• 3 scales for precise readings
• Convenient hand-held remote sensor
• Includes informative booklet with lighting recommendations

• Great accessories for your growroom
• Backed by manufacturer’s warranty
• Another great item from Flora Hydroponics

Product description

1 Buy = 2 Hydrofarm Digital Light Meters! The LG17010 **Hydrofarm Digital Light Meter** is a precision instrument used to measure luminance (foot-candles). The meter is fully cosine corrected for the angular incidence of light, meaning that if you are not holding the sensor perfectly perpendicular to the light source, the sensor will still read the light correctly. The **Hydrofarm Digital Light Meter** sensor is stable and made of a long-life silicon photo diode. The digital light meter accurately measures to 5,000 FC. The meter’s built-in low battery indicator means you’ll never be caught by surprise by a low-power product. Buy Hydrofarm products from VMInnovations, an authorized dealer!

• Brand New LG17010 **Hydrofarm Digital Light Meters**!
• Measures grow lights or sunlight
• Measures up to 5,000 footcandles
• 3 scales for precise readings
• Convenient hand-held remote sensor

Product description

Quantum PAR meter is fully portable handheld PAR meter features our highly accurate, integrated Quantum Sensor that measures PAR (photo synthetically active radiation) flux in wavelengths ranging from the 400 to 700 nm. It measuresup to 10, 000 MOL compared with 2, 000 moll for other meters on the market. Data logging capability using standard mini-USB cable & Proprietary data logging software available at Hydrofarm. Low power consumption with built-in low battery power Indication. Constant linear response curve (as opposed to other meters quo; Gaussian response) yields higher accuracy independent of wavelength perfect for measuring LED light output. Automatic sun or electric light calibration modes ensure accurate readings no matter the source. The logging software is compatible with Windows XP, 7 & 10 only.

• Data logging capability using standard mini-USB cable and proprietary data logging software available at Hydrofarm
• Low power consumption with built-in low Battery power Indication
• Constant linear response curve (as opposed to other meters' Gaussian response) yields higher accuracy independent of wavelength - perfect for measuring LED light output
• No assembly required
• Logging software compatible with Windows XP, 7 & 10 only

User questions & answers

Question:	May I fix sensor at covered struct for measuring every day? It will be exposed to sun light every day
Answer:	That makes no sense to me, why would anyone what to fix this to a structure at all times? One it’s not waterproof, second the sensor would get ruin, third the battery wouldn’t last that long and would cut off. I would say no don’t mount this to anything, it’s meant to be used by hand at the moment.
Question:	I’m trying to perform a successive measurement log but it shuts off after two minutes. How do I keep the meter on
Answer:	Yes, this is a real PAR meter. In LOG mode it shuts off every two minutes to save electricity, if you perform a successive measurement do not use in LOG mode.
Question:	Can i use this to measure par underwater (sensor only) in my aquarium
Answer:	It is not designed for that, so it is very doubtful. Obviously, if you ruined the sensor by submerging it, this would void the warranty.
Question:	Is this a real par meter, or is it a modified lux meter with some filters and software that interpolates the data? sensor looks like a lux sensor
Answer:	It's a real PAR meter. Pretty accurate too. But has a serious flaw in build quality that will likely force you to open it up and fix it. Just happened to mine after 6 months of use.

Product features

Quantum Par Meter

This fully portable handheld PAR meter features our highly accurate, integrated Quantum Sensor that measures PAR (Photosynthetically Active Radiation) flux in wavelengths ranging from 400 to 700 nm. It measures up to 10,000 μmol/s compared with 2,000 μmol/s for other meters on the market.

Autopilot CO2 Generators

Elevating the atmospheric CO2 levels in your grow room can result in remarkable increases in plant growth productivity. Autopilot CO2 generators provide and maintain the carbon dioxide levels needed to meet maximum growing potential. Available sizes: 4, 8 and 10 burner.

Autopilot Desktop CO2 Monitor with Memory and Data Storage

This unit monitors and precisely records atmospheric CO2 levels, temperature and relative humidity. Monitoring these variables enables you to dial in the perfect conditions for your plants. Record and export one year's worth of data.

Active Air CO2 System with Timer

Deliver plant growth-boosting CO2 with our user-friendly, easy to operate system. With its programmable timer, it will automatically maintain ideal CO2 levels for optimum growth. For small to medium size areas, select the Cosys; for larger than 10' x 10' areas, select the Cosys20.

Product description

Gardeners can conveniently test their moisture, light, & pH levels with the handy ActiveAir 3-WAY meter. Moisture readings register on a scale of 0 (dry) to 10 (moist), light readings range from 0 (low light) to 2000 (very strong light), & pH readings between pH 0 (acidic) & pH 10 (basic) are represented. The durable, easy-to-read tester is suitable for indoors or out & needs no batteries to operate.

• Helps prevent over watering
• Provides accurate pH values from 4-9
• Sturdy and easy to use
• Good for use indoors or outdoors
• No batteries required

User questions & answers

Question:	how does it do in heavy media applications such as gravel
Answer:	I know that the moisture indicator works great, but I don't know if it works on gravel but it would be worth the price to find out if it does work on gravel.
Question:	What's the correct zone for emerald green and green giant arborvitae? That variety was not listed on the back of the packaging
Answer:	We have not studied that plant variety so you may want to check with the nursery or other source about it. One page of information that came up right away when we Googled it read: Most arborvitaes grow happily in soil with a pH ranging from acidic to moderately alkaline, and "Green Giant" is no exception. Its parent Japanese arborvitae (USDA zones 5 though 7) prefers neutral to alkaline loam; that translates to a pH of about 7 or above.
Question:	I turn the switch to Moist, I put it in 3/4 inch to 1 inch of water and the results were still in the lower green area of 4 to 6, that's wet
Answer:	Moisture testing must be performed in soil/substrate and will not work if inserted directly in water. Only the pH function can be tested in directly in water.
Question:	what meassurement of light does this use
Answer:	I don't know that off hand. Have you read the package ?

Product features

Active Air 2-Way & 3-Way Meters

Gardeners can conveniently test their garden conditions with the handy Active Air 2-Way and 3-Way Meters. The 2-Way Meter provides moisture readings on a scale of 0 (dry) to 10 (moist) and pH readings between pH 3 (acidic) and pH 10 (basic). The 3-Way Meter measures moisture (0-10) and pH (range of 4-8) and also reads light levels on a scale between 0 LUX (low light) to 2000 LUX (very strong light).

Easy to read

Both the 2-Way and 3-Way meters have needle gauges that are very easy to read at a glance.

Long probes

Both models have 6" probes that can go deep into the soil or medium to read conditions in the root zone.

Simple selector switches

Both models use simple slide switches for selecting the meter’s mode: a two-position switch for the 2-Way Meter, and a three-position switch for the 3-Way Meter.