Runleader is proud to present the new RL-HM038V Digital Voltmeter. It can work on any battery. It has a powerful voltage system as well as some other unique function design.
Voltage Measuring System Including: measuring voltage current battery, overvoltage and undervoltage reminder etc.
Unique Design Including: easy installed, CR2032 battery+external power, data stored automatically, waterproof Rate IP68,etc.
In addition, the products have got CE and ROHS certification. It has a patent in China.