Mini Digital Voltmeter, DC 2.4V-30V Measuring Range Two-Wire Voltage Tester, Reverse Polarity Protection and Accurate Pressure Measurement, Red

Two-wire connector, with reverse polarity protection. And with fine tension adjustment function. Measuring range: DC 2.5-30V (red), 2.6-30V (yellow/green), 3.2-30V (blue), 3.0-30V (white). Easy to Install - Small size and light weight, with 2 wire digital voltmeter, easy to install and connect. Wide Application The mini voltage measurement module can be used to measure the voltage of 18650 batteries or car batteries using the soldered cables of the module. Box contents: 6 x red mini digital voltmeters