Two-Wire DC Voltmeter Head DC4.5V-30.0V Reverse Connection Protection 0.56 Inch Led Digital Voltmeter

• 1. The wiring of this voltmeter is simple. It only needs to connect two wires. The red wire is connected to the positive and the black wire is connected to the negative.

  2. This voltmeter does not require an external working power supply, and can work directly with the measured voltage, with a wide working voltage range of 4.5-30V.

  3. In order to achieve the best measurement accuracy, the voltmeter will automatically move the position of the decimal point according to the difference of the measured voltage. When measuring voltage below 10V, two decimal places are displayed; when measuring voltage above 10V, one decimal place is displayed.

  4. This voltmeter can be used to monitor the battery voltage of motorcycles, automobiles, etc., and grasp the battery status in time. It can also be used for other voltage measurement purposes.

• Note the list:

  1. 30V is for the meter voltmeter. The high limit operating voltage, please pay attention to leave enough margin for the meter when using it to avoid long-term damage to the voltmeter due to motor sparks, power ripple or other excessively high sudden voltages.

  2. This voltmeter has not been treated with moisture-proof, water-proof, shock-proof and oil-proof treatment. Please pay attention to it when using it, or dispose of it by yourself.

• Measuring range: 4.5-30V
  Low input: DC4.5V (lower than. Low voltage measurement is not accurate or not displayed)
  High input; DC30V (higher than this voltage, there is a risk of burning)
  Allowable error: below 10V to 0.01V, above 10V to 0.1V, allowable error 1% (+/-1 word)
  Display mode: three-digit 0.56 "LED digital tube
  Refresh speed: about 200mS/time
  Power supply: No power required
  Current consumption; less than 20mA, generally 5-15mA
  Working temperature: -10℃~65℃
  Dimensions: length 48x width 29x thickness 16mm
  Hole size: 46x27mm
  Lead length; 20cm