... record the working time together. GY-807 Volt Hour Meter can display the volt and record the working ... carts, cleaning equipment, vehicles, engineering vehicles, scooters, electric bicycles, electric water scooter, medical devices and other equipment, the ... : Count input:0-999999.59(hour)or 0-9999999.9(hour)Accumulated timing precision0.01%relative errorReset ... 1-8gMounting Size: DJP-807 Volt Hour Meter