1. wireless data transmission, to avoid the display and detection module between the complex wiring interference, while the wiring is more convenient;2. hall sensor to achieve non-contact detection of current without disconnecting wire, safe, reliable, convenient;3. voltage, current, power, temperature (optional), capacity, percentage of residual capacity, running time display at the same time;4. charging and discharging double relay interface ,5 relay working modes can realize automatic disconnection and automatic closure of charge and discharge5. has charging overvoltage, discharge undervoltage, charging overcurrent, discharge overcurrent protection, and with buzzer alarm function;6. with power off memory function, can record the number of AH and WH becompatible withe power off;7. the percentage progress bar when charging switch to color flow light display, enhance the display effect;8. with voltage, current, temperature wavecompatible withm display function;9. own TTL serial communication function, easy to secondary development;10.Chinese and English language selection, two display color can be switched, three display interface adjustable, suitable compatible with different customer needsColour:As shownMaterial:Plastic + MetalPackage Contents:1 x Wireless Voltage Meter(200A)Only the above package content, other products are not included.Note: Light shooting 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.