brand new and high quality Features: 2.4-inch color LCD display can display data more comprehensively, clearly and intuitively, easy to read. Wireless data transmission avoids the interference caused by the complicated wiring between the display and the detection module, and the wiring is easier. Adopts Hall sensor 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 for time are displayed simultaneously. Dual relay interface can manage charging and discharging separately. It has for protection functions for charge overvoltage, discharge undervoltage, charge overcurrent, and discharge overcurrent. Breakpoint memory function, after power off, it can memorize the AH number and WH number before power off. Tips: If the voltage of the tested battery (power supply) is within the range of (6-80) V, the battery (power supply) self-powered connection method can be used. If the tested battery voltage is greater than 80V or less than 6V, the external power supply wiring method should be used; voltage if it is not within the (6-80) V range, please do not use self-powered method wiring, which may damage the measuring instrument. Specification: Product name: Wireless Voltage Meter Self-powered measurement range: 6V~80V External power supply measuring range: 0~120V Input current measurement range: 0~100A External power supply voltage: 6-60V Display mode: 2.4 inch color LCD display Voltage measurement range: 0.01V~120V Current measurement range: 0.1A~100A Capacity measurement range: 0.001AH~65000.00AH Electric energy measurement range: 0.000KWH~9999KWH for Time measurement range: 0~100 hours Power value measurement range: 999KW Temperature measurement range: 1~100C Voltage accuracy: 1% + 2 words Current accuracy: 2% + 5 words Temperature accuracy: 1.5 Measuring speed: 5 times/sec Relay delay time: (0-60) S Communication distance: Open land single group 10 meters OVP (overvoltage for protection): 0.01V~500V LVP (undervoltage for protection): 0.01~500V OCP (Charge overcurrent for protection): 0-500A NCP (discharge overcurrent for protection): 0-500A Material: ABS Size: app.114x54x28mm/4.49x2.13x1.10in Optional Styles: for W(Without temperature), B(With temperature) Optional Models: 1, 2, 3, 4, 5, 6, 7, 8 Color: As pictures shown Quantity: 1set Note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Display Module 1 x Measuring Module(including 1pc measuring board and 1pc Hall sensor) 1 x 2P red and black wire leads 1 x Male-to-male USB2.0 cable(other accessories demo in the picture is not included.)