Introduction: _x005f_x000D_ This voltmeter has the smallest volume, DC range DC0-100V, universal for 2-wire and 3-wire products, breaking the conventional voltmeter, is the latest design. _x005f_x000D_ 1. It can work directly in 5V, 9V, 12V, 24V and other circuits without voltage regulation. _x005f_x000D_ 2. It is equipped with three wires for easy access to the car/battery/motorcycle car line. It has reverse connection protection function, and the wire connection will not burn. _x005f_x000D_ 3. It is used to monitor the battery voltage, grasp the battery voltage status in time, and can also be used for voltage measurement of other products. _x005f_x000D_ Note that the maximum input voltage of the 2-wire cannot exceed 30V, otherwise there is a danger of burning. _x005f_x000D_ Note: The three-wire use voltage range is 0-100V, which can also be used for two-wire but the voltage should be within 40V. _x005f_x000D_ _x005f_x000D_ Features: _x005f_x000D_ 1. The product has good stability and high measurement accuracy. _x005f_x000D_ 2. The appearance is standard size and easy to install. _x005f_x000D_ 3. The power supply uses a polarity protection circuit. _x005f_x000D_ _x005f_x000D_ Specification: _x005f_x000D_ Technical Parameters: _x005f_x000D_ 2-wire working voltage: 4.0-40V (with reverse connection protection) _x005f_x000D_ 2-wire detection voltage: 0.0-40V _x005f_x000D_ 3-wire working voltage: 4.0-40V (with reverse connection protection) _x005f_x000D_ 3-wire detection voltage: 0.0-100V _x005f_x000D_ Working current: