2.4G wireless transmission, Hall sensor measuring current, charge and discharge bidirectional current detection Wireless data transmission avoids the interference caused by the complicated wiring between the display and the detection module, and the wiring is easier. The Hall sensor is used to realize non-contact current detection without disconnecting the wire, which is safe, reliable and convenient. Voltage, current, power, temperature, capacity, percentage of remaining capacity, and running time are displayed simultaneously. It has the power-off memory function, and the AH number before the power-off can be memorized after the power-off. the displays more comprehensive, clear and easy-to-observe data. Input voltage: when self-powered, measuring range: 6V-80V Measuring range when external power supply: 0-120V Input current measurement range: 0-100A External power supply voltage: 6-60V Display mode: 2.4 inch color LCD display Voltage: 0.01V-120V Current: 0.1A-100A Capacity: 0.001AH-65000.00AH Energy: 0.000KWH-9999KWH Time: 0-100 hours Power value: 999KW Temperature: 1-100 Voltage: +/- 1%+2 words Current: +/- 1%+5 words Temperature: +/- 1.5 Measurement rate: 5 times/sec Relay delay time: (0-60) S Communication distance: 10 meters for a single group in an open area OVP (over voltage protection): 0.01V~500V (undervoltage protection): 0.01-500V OCP (Charge Overcurrent Protection): 0-200A NCP (discharge overcurrent protection): 0-200A colour: black Material: PCB Package Contents: 1 x display module 3 x 2P red and black wire 1 x male to male USB2.0 cable 1 x measurement module (including a measurement board and a Hall sensor) Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.