0.28 Inch 3-30V Three Wire DC Voltmeter

0.28 Inch 3-30V Three Wire DC Voltmeter.

This is tiny and compact digital voltmeter with a LED Display. The 3 to 30 V 0.28 inch Digital Voltage Tester DC VOLTMETER requires only a few minutes of configuration and is as simple as directly connecting wires to the source you want to measure and seeing the LED blink.
The red wire is to connect to the positive pole, the black wire is to connect to negative pole and the yellow/white wire is to connect to the positive pole of that source or another source across which we meant to measure the voltage. While measuring the supply voltage of another source make sure that negative pole is joined common. No need to worry even if there is any connection mismatch of the wires, the electric circuit wont be a boom because it features reverse polarity protection.
It requires an extra power supply of 0V to 100V.To reach the best measurement accuracy, this voltmeter will automatically move the decimal points position according to the different measuring voltage. When it measures the voltage below 10V, it will display two places after the decimal point. When it measures the voltage above 10V, it will display one place after the decimal point.

Connections :-
Red Wire: Positive of the Power supply
Black Wire: Negative of the Power supply and also used as the negative of the measurement voltage source
Yellow/White/Blue: Positive of the measurement voltage source

Features :

• Very small and lightweight voltmeter module.
• Very handy and easy to use.
• It requires an extra power supply of 3V to 30V
• Best operates in the working voltage range of 5V to 24V
• 100% Brand new and high quality.
• No direct exposure to sunlight
• product stability, high accuracy

*product image for illustration purposes only. actual product may vary.