13 best unknown voltmeters

Unknown voltmeters are electrical measuring instruments used to gauge the voltage of batteries, electrical systems, or circuits in various applications, including boating and sailing. While less well-known compared to established brands, these voltmeters serve the essential purpose of monitoring voltage levels. Here's what you can expect from unknown voltmeters:

  1. Functionality: Unknown voltmeters measure voltage, which is essential for assessing the health and status of batteries and electrical systems. They provide readings in volts, allowing users to determine if a battery is charged, if an electrical system is operational, or if there are voltage irregularities.

  2. Voltage Range: These voltmeters typically have a specific voltage range they can measure. Common ranges include 0-30V, 0-60V, or 0-100V, but this can vary based on the model.

  3. Display: Most voltmeters feature digital displays that show voltage readings in a clear and easy-to-read format. Some may use LED or LCD screens, and backlighting may be included for visibility in low-light conditions.

  4. Accuracy: The accuracy of unknown voltmeters can vary. Precision is a crucial factor when selecting a voltmeter, as more accurate readings are essential for critical applications.

  5. Mounting Options: Depending on the intended use, these voltmeters may be designed for panel mounting or surface mounting.Panel-mounted voltmeters are often used in boating and other applications where they need to be integrated into an existing control panel.

  6. Power Supply: Some voltmeters require an external power source, while others are powered directly from the system they are measuring. Battery-powered voltmeters are often used in boating and sailing for monitoring onboard electrical systems.

  7. Protection: Some voltmeters may offer protection features such as overvoltage protection or reverse polarity protection to prevent damage to the meter or the circuit being tested.

  8. Water Resistance: In the context of boating and sailing, some unknown voltmeters may be designed with water-resistant or waterproof features to withstand exposure to moisture and splashes.

  9. Price: Unknown voltmeters often provide cost-effective alternatives to more established brands. This can be especially appealing to boaters and sailors looking to monitor their electrical systems without breaking the bank.

When considering an unknown voltmeter, it's essential to ensure that it meets the specific requirements of your application and that it provides accurate and reliable voltage readings. Additionally, verify that it adheres to relevant safety and quality standards, especially in marine environments, where safety and performance are paramount.

Below you can find our editor's choice of the best unknown voltmeters on the market
  

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Based on 154 reviews Check latest price

DC Voltage Display, Waterproof 12V DC Voltmeter LED Digital Display Volt Meter ScaleTester Gauge for Car Motorcycle Truck Boat RV

Estink

Based on 1 reviews Check latest price

Product description

Description:

   This LED display volt meter is great for checking voltage. It can be used to monitor the storage-battery voltage and timely grasp the state of your battery voltage, and the voltmeter will flash alert when the voltage is too high. There are 3 colors of indications to show different voltage status which helps to test the vehicle's battery status obviously and improve safety perfectly.



Specifications:

Material: ABS

Color: Black shell

Input Voltage: DC 12V

Voltage Measuring Range: 5 - 15V(blue digital display)

LED Color: Red(11.3V-11.9V), Amber(12V-12.5V), Green(12.6V-15V)

Size(L x D): 4.1 x 3.7cm/1.61'' x 1.46''

Package Weight: approx. 22g



Package Included:

1 x LED Display Voltmeter

2 x Terminal Connectors



Notes:

Easy to install, but professional installation is highly recommended.

  • 【Effective Function】This voltmeter is used to monitor the storage-battery voltage and timely grasp the state of your battery voltage. ] It will flash alert when the voltage reaches too high.
  • 【LED Display】There is a LED display with 3 colors of indications to show different voltage status which helps to test the vehicle's battery status.
  • 【Waterproof and Durable】It is waterproof and durable for a long service time.
  • 【Easy Installation】With twist and lock system, it is in mini size and easy to install.
  • 【Wide Range Application】It is universally fits for most DC 12V vehicles, such as motorbikes, cars, boats, ATV, UTV, camper, caravans, travel trailer etc.

Voltmeter Socket, 12V 24V DC Waterproof Car LED Digital Display Voltmeter Socket Meter

Dweekiy

Product description

 

Specifications:

Quantity: 1

Voltmeter Socket

Input voltage:12V-24V

Measure voltage: 6 ~ 33V

Lights color:white

Size: 3.5 x 2.7cm(L x D)

Net weight:13g

Package weight: 23g



Package Content:

1 x Voltmeter Socket

  • 100% brand new and high quality
  • Used to monitor the storage-battery voltage, with reverse connection protection function, line will not burn.
  • Input voltage:12V-24V
  • Measure voltage: 6 ~ 33V
  • Quality guarantee: We provide 24-month product warranty, please feel free to contact us if you have any questions after received our products, we will try our best to solve your problem. You can buy it without worry.

Toggle Switch Panel, 12-24V 5 Gang On/Off Toggle Switch Panel Dual USB Voltmeter for Car Boat Marine Truck(red)

Dweekiy

Based on 2 reviews Check latest price

Product description

Specifications:

Material: ABS Plastic + Metal

Item Color: Black

LED Color: Green, Red (optional)

Voltage: 12V-24V

USB Socket Output: DC 5V / 4.2A(total)

Power Outlet: DC 12V

Voltmeter Display Range: 0-24V

Overload Protection: 12V-24V, 15A DC

Operating Temperature: -25 degree to 80 degree

Size: 150 * 105mm/5.9 * 4.1in

Package Weight: approx.377g

Fitment: Universal



Package List:

1 * Toggle Switch Panel

1 * Set of labels

4 * Screws

  • Widely used in 12V-24V electromobile, such as for cars, motorcycles, buses, boats, RVs, yachts, trailers, trucks and so on
  • Ultra luxury modified 5 gang toggle switch panel with green/red(optional) LED work light
  • Built-in overload, over-current and short circuit protection, very safe to use
  • Dual USB charger port for meet your various charging needs, fast charging for iOS/Android mobile phone, GPS navigation, camera, etc.With a range of 0-24V voltmeter, real time monitor the battery voltage
  • Good quality assurance, fast delivery, and after-sales service to meet your requirements as much as possible. If you encounter any problems, feel free to contact us, we will do our best to provide the best service and will respond within 24 hours.

Qiilu Voltmeter Water Temp Gauge Oil Pressure Gauge Triple Voltage Gauge Sensor 3 in 1 Car Meter Auto Gauge

Qiilu Tool

Based on 10 reviews Check latest price

Product description

Features: 

100% brand new and high quality. Made of quality ABS and aluminium alloy material, durable and good strength. Including voltmeter, water temp, and oil pressure gauge in one set. Suitable for car with voltage 12v. Easy installation, suitable for professional use.

Specification: 

Condition: 100% Brand New

Item Type: Triple Gauge Kit

Color: Black

Material: ABS, Aluminium Alloy

Size: Approx.190 * 79mm / 7.5 * 3.1in

Weight: Approx.491g



Package List: 

1 * Triple Gauge Kit

1 * Valve

1 * Installation Screw

3 * Retaining Screw

3 * Large Gasket

3 * Small Gasket

  • 【3 in 1 Gauge】Including voltmeter, water temp, and oil pressure gauge in one set. Accurately measure voltage, oil pressure and water pressure, and feedback correct data in real time.
  • 【Preferred Material】The voltmeter gauge kit is made of quality ABS and aluminium alloy material, durable and good strength, beautiful and smooth,extremely durable for long lasting usage.
  • 【12V Compatible Car】Suitable for car with voltage 12v. The three dials are on the same plane, at a glance. When driving at night, the three dials light up to decorate your car and give you a different feeling.
  • 【Convenient Installation】The triple gauge kit is easy to install, just need to install the screws accurately, but professional installation is highli recommended.
  • √ Buy with confidence! We offer the 365-Day warranty and lifetime support. If you have any question on use, kindly contact us at any time directly, we will solve the problem for you within 24 hours on weekdays.

Digital Battery Tester 10-100V 2021 EDITION, LCD Display, 12V 24V 36V 48V Acid Lead Lithium Battery Capacity Indicator, Digital Voltmeter Voltage Tester with Temperature and Buzzer.

Based on 1 reviews Check latest price

Product description

Battery Capacity Voltage Temperature Indicator



Parameter:

Input Voltage: 10-100V

Defaulted Applicable Battery: 12V lead-acid battery

Detect Value: battery level; electric quantity percentage; voltage; temperature

Working Consumption: 5mA typically, 6mA max.

Voltage Accuracy: ±0.1% typically, ±0.5% max

Temperature Accuracy: ±0.5℃ typically, ±1℃ max

Dormant Mode Consumption: 6-12uA, 10uA typically

Working Temperature: -10~55℃

Reverse Protection: Yes

Display: LCD color screen

Auto Power-off: Yes

Auto Power-off Time Value: Adjustable

Product Size: 61.5*33.5*13.5mm

Installation Size: 58.5*28.5mm

Display Size: 36*19.5mm



Package Included:

1x 12V Lead-acid Battery Status Indicator

  • 🔋 APPLICABLE BATTERY --- The digital battery monitor is suitable for lead-acid 12V, 24V, 36V, 48V,60V,84V (can be changed via key, specific please see setup instructions as below), lithium battery, lithium iron phosphate, nickel hydrogen and other batteries.
  • 🛡PROTECTION --- The battery power detector comes with simple dustproof waterproof surface, full protection cover and reverse polarity protection.
  • ✔️ APPLICATION: This multimeter can be used as a battery capacity tester for all batteries. Work also as battery voltage meter and temperature display panel for marine, vehicles, recreational vehicles, boats, cars, etc.
  • 📢 ALARM: The red lightning flashes the alarm when the battery is low.
  • 📱 LCD DISPLAY: the resistant LCD screen shows the percentage of remaining battery power, voltage and temperature value.

Voltmeter Digital 12v, Motorcycle Voltmeter Waterproof Led Display Voltmeter Gauge Automotive DC 12V Car Voltmeter with LED Digital Display Panel for Truck ATV UTV Boat Marine Vehicle Motorcycle

Yosoo Health Gear

Based on 9 reviews Check latest price

Product description

Description:

This LED display volt meter is great for checking voltage. It can be used to monitor the storage-battery voltage and timely grasp the state of your battery voltage, and the voltmeter will flash alert when the voltage is too high. There are 3 colors of indications to show different voltage status which helps to test the vehicle's battery status obviously and improve safety perfectly.

 

Features:

- This voltmeter is used to monitor the storage-battery voltage and timely grasp the state of your battery voltage.

- There is a LED display with 3 colors of indications to show different voltage status which helps to test the vehicle's battery status obviously and improve safety perfectly.

- It will flash alert when the voltage reaches too high.

- It is waterproof and durable for a long service time.

- With twist and lock system, it is in mini size and easy to install.

- It is universally fits for most DC 12V vehicles, such as motorbikes, cars, boats, ATV, UTV, camper, caravans, travel trailer etc.

 

Specifications:

Material: ABS

Color: Black shell

Input Voltage: DC 12V

Voltage Measuring Range: 5 - 15V(blue digital display)

LED Color: Red(11.3V-11.9V), Amber(12V-12.5V), Green(12.6V-15V)

Size(L x D): 4.1 x 3.7cm/1.61'' x 1.46''

Package Weight: approx. 22g

 

Package Included:

1 x LED Display Voltmeter

2 x Terminal Connectors

  • [Function]: If the battery voltage is too low or too high, it will reduce the battery life and affect the driving of the car; Accurately detecting the battery voltage in 24 hours, once the voltage is found to be abnormal, you can timely take measures to extend battery life
  • [3 Colors LED Display]: There is a LED display with 3 colors of indications to show different voltage status, it is more intuitive to see the current battery usage status; LED digital display, clear at a glance
  • [Smart Alarm]: Intelligently measure the voltage, when the voltage is too low or too high, the buzzer warning light will light up to initiate a buzzer alarm
  • [Waterproof]: IP65 waterproof level, the motorcycle voltmeter waterproof can effectively prevent rainwater from entering and causing damage to the voltmeter, motorcycle is not afraid of rain
  • [Safe to Use]: Adopt PC environmental protection, flame retardant high and low temperature resistant materials, the safety factor is very high; The voltmeter digital 12v comes with reverse connection protection and short circuit protection, It will not burn if reversed

Multimeter Voltage Tester - Digital AC&DC Current Voltmeter, Volt Ohm Amp DMM, Reading Capacitance Resistance Frequency, Diode Continuity hFE Test with Backlit (ANNMETER AN-760B)

Product description

ANNMETER AN-760B Designed at compact, handheld size. Functions in AC/DC volts,current test, resistance, capacitance, Inductance, transistor hFE test, more with mechanical blocking system for safer work. This Instrument DMM tester performs excellent job and exquisite design makes it a handy tool for household and electrical measuring!

 

☞ Features:

  • LCD Back light
  • LCD Display 1999
  • Over-load protective
  • LED dial Indicator Lamp
  • Mechanical blocking system
  • AC /DC Voltage,Current Test
  • Diode Measurement and audible continuity test

 

 

☞ Specification:

  • Dimension:  7.67x3.5x1.57inch
  • Weight: 0.77Ib(included Battery)
  • Max LCD display: 1999 counts digit.
  • Temperature: -4~1832℉ (-20~1000℃)
  • Frequency: 200KHz +/-(3.0% of rdg + 15 digits)
  • Capacitance: 2nF~200μF +/-(2.5% of rdg + 20 digits)
  • AC Current Test: 2mA ~20A +/-(2.0% of rdg + 8 digits)
  • DC Current Test: 2mA ~20A +/-(1.2% of rdg +8 digits)
  • AC Voltage Test: 2V~700V +/-(1.5% of rdg + 10 digits)
  • DC Voltage Test: 200mV~1000V +/-(0.5% of rdg + 8digits)
  • Resistance: 200Ω/2kΩ/20kΩ/200kΩ/20MΩ +/-(0.8% of rdg + 8 digits)

 

 

☞ What You Get?

  • 1* Test Leads
  • 1* Temp Probe
  • 1* Instruction
  • 1* 9V Battery
  • 1* AN-760B Multimeter

  • ▶【Intelligent Voltmeter】Smart digital multimetro with features in AC&DC Volts, Current Test, Resistance up to 20M Ohms, Capacitance 20uF high, Frequency 200kHz, Diode, Continuity test and More, Temperature ranges -20~1000℃ with temp test probe provide. (Celsius Only)
  • ▶【Practicality Ohmmeter】Manual ranging display 1999 counts digit. A large LCD Display with Backlight and indicator lamp light humanized design for visibility in dimly lit areas. Low battery indication,long-life 9V battery (Provided), Its a economic tools for anyone.
  • ▶【User-Friendly Ampmeter】 Compact Digital instrument with full functions for wide applications, such as household sockets, fuses, cables, distribution box, automotive circuits and charging systems; Its a perfect DMM for household use, also a handy multimeter for students.
  • ▶【Note Before Using】We must be careful when deal with the electrical problems. before using you may need to dial the switch to the highest range if testing unknown current, and adjust it down by the readings. for AC/DC current 20A, MAX testing time should be less 10second, in order to protect the fuse better.(fuse rating 200mA or 20A)
  • ▶【Durable Electrical Instrument 】This AN-760B has Mechanical blocking system preventing use the wrong test lead. Auto-zeroing, polarity selection, Overload protection on all ranges to keep you safe during the measurements. ANNMETER provide 12 months warranty with lifetime tech-support. Professional after-sales team response within 24hrs for any questions. Buy it with confidence!

RED LION CONTROLS DIGITAL PANEL MOUNT VOLTMETER CUB4V

Unknown

Product description

RED LION CONTROLS DIGITAL PANEL MOUNT VOLTMETER CUB4V000 ; GUARANTEED NOT DOA ; C1DB SW 1 MMH 4/7/14

  • RED LION CONTROLS DIGITAL PANEL MOUNT VOLTMETER CUB4V

Digital Multimeters DC AC Voltmeter Resistance Current Ohm Pocket Tester Meter with Backlight LCD

Walfront

Based on 1 reviews Check latest price

Product description

This is a multimeter can be used for AC/DC voltage test, DC current test, electric current resistance test, frequency test and so on. It is very useful in laboratory,school, factory and workshop. It can safely and accurately solve a series of automotive and household electrical problems. It is designed with over Load protection and low voltage indicator function. Moreover, it supports data hold function, so it is easy and convenient for users to read data.



Specifications:

DC Voltage: 200mV/2V/20V/200V/600V±(0.5%)

AC Voltage: 200V/600V±(1.0%)

DC Current: 200μA/2mA/20mA/200mA/10A±(1.0%)

Resistance: 200Ω/2kΩ/20kΩ/200Ω/2MΩ±(1.0%)

Triode Measurement: Yes (PNP/NPN Triode hFE)

Data Hold: Support

Backlight: Support

Overload Protection: Support

Continuity Test: Support

Input Resistance: 1MΩ

Battery Type: 9V, 6F22( Not included)

Max. Digit Display: 3-1/2(1,999)

Display Size: 45 x 20mm / 1.77 x 0.78"

Color: Black+yellow

Size: 14 x 6 x 3.5cm / 5.51 x 2.36 x 1.37"



Package Includes:

1 x Multimeter(with no battery)

2 x Test Leads

1 x Manual

BANDC Voltmeter Battery Test Panel Rocker Switch Dpdt/on-off-on for Marine/boat/rv 5-30v Dc

BANDC

Based on 26 reviews Check latest price

Product description

Package Contents:

1x BATTERY TEST PANEL

  • BATTERY TEST PANEL,be used for Marine/Boat/RV.
  • Size Of Panel:100 x60mm
  • Size of Screw Hole:87 x 47mm
  • Size of Drill:82 x 42mm
  • Rating: Bound:5-30V DC

User questions & answers

Question: Can this be used for both 6 volt and 12 volt applications (batteries
Answer: yes, it is correct. Please notice that color may be different in real life because it`s natural wood and has its own shade
Question: Is this panel waterproof
Answer: Prime type means that the map includes: 1) Countries 2) Capitals ( only for sizes L/XL/XXL ) 3) States of the USA, Canada, Australia 4) “Antarctica” piece
Question: can you use this if you are using only 1 battery
Answer: No sorry, just in english right now.
Question: Can this switch be use to selects between 2 x12 volt sources one with 400a/h battery & one with 220 a/h battery. Thanks
Answer: Hey there are 50 in the pack

Miyako USA (74B11) Circuit Tester Voltmeter Tests 6V12V24V Auto Car Motorcycle and Small Engines

Based on 4 reviews Check latest price

Product description

Description :

Our product is 100% brand new and not used. The unique long-life lamp tube does not generate heat. The small size is equipped with a small clip for easy carrying and use. It is used to test fuses and lamp holders (break lights, backup lamps, etc.) and can help you find damaged wires. It can be used for cars, boats, motorcycles, small engines, etc.

Specification :

  • Material: copper
  • Color: Silver
  • Voltage range: DC 6V-24V
  • Frequency range: 50 / 60Hz
  • Size: about 10.7x1cm / 4.2x0.4 inches
  • Cable length: about 64 cm / 25.2 inches
  • Type: Non-contact voltage measuring instrument
  • Test Pencil Body Material: AS Plastic
  • Pen Arbor Material: Carbon Steel 45


Package:

  • 1 tester
  • 1 cable (with crocodile clips)

  • 【Test Range】: 6V-12V-24V.
  • 【Wire length】: About 65cm.
  • 【Unique design】: The unique long-life lamp tube does not generate heat and is comfortable and safe. It is small in size, compact in structure, and equipped with clips for easy carrying and use.
  • 【Applicable type】: Ideal for cars, boats, motorcycles and small engines.
  • 【Function】: Used to test fuses and lamp holders (break lights, backup lights, etc.) to help you find broken wires.

Marine Boat Aluminum Plate Voltmeter Battery Test Switch 12VDC

Pactrade Marine

Based on 1 reviews Check latest price

Product description

This is a slim design aluminum plate battery tester. Operates in 12VDC Dimensions: 3.25" by 2.5" Item:P70060-12

  • This is a slim design aluminum plate battery tester. 
  • Operates in 12VDC
  • Dimensions: 3.25" by 2.5" 
  • Item:P70060-12

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