Check the listing for details. DC 500V 500A Wireless Voltmeter Ammeter Battery Capacity Power Meter Coulometer. Condition: New. Listed at 45.99 USD. Description:VAC8810F is a multi-function instrument, which can display various physical parameters such as voltage, current, power, capacity, energy, temperature, running time, etc. in real time. Battery charge and discharge management and over-voltage, under-voltage, over-current protection accompanied by buzzer alarm. Moreover, the instrument uses a 2.4-inch color LCD as a display, which displays more comprehensive, clear, and easy-to-observe data. A communication interface is reserved for secondary development.Features:1. Transmission of data to avoid interference caused by complex wiring between the display and the detection module;2. The Hall sensor is used to realize non-contact detection of current, without breaking the line, safe, reliable and convenient;3. Voltage, current, power, temperature (optional), capacity, percentage of remaining capacity, and running time are displayed at the same time;4. Charge and discharge double relay interface, 5 relay working modes can realize automatic disconnection and automatic closing of charge and discharge;5. With charge over-voltage, discharge under-voltage, charge over-current, discharge over-current protection, with buzzer alarm prompt function;6. With power-off memory function, it can record the number of AH and WH before power-off;7. When charging, the percentage progress bar is switched to the color running water light display, and the display screen shows the breathing light flashing effect, which enhances the prompt;8. With voltage, current, temperature waveform curve display function;9. Comes with TTL serial communication function, which is convenient for secondary development;10. Chinese and English language selection, two display colors can be switched, suitable for different customer needs.Package Included:- 1 x LCD Monitor- 1 x Test Box- 1 x Hall Sensor (Closed)- 3 x Hx2.54 Cables- 1 x USB to Mini USB CableNote:- Battery is not included.Attention:OVP (Over-voltage protection); LVP (low-voltage protection); OCP (Charge over-current protection); NCP (Discharge over-current protection).