Wireless Color LCD Screen DC Voltage Ammeter Power Meter Watt Tester (VAT-1300, 0-300A 0-100V) Features: This is a multi-function DC meter based on 2.4G wireless data transmission technology. The instrument can automatically identify the direction of the current, and the battery capacity can be monitored in real time. The instrument uses TFT LCD display, display information is comprehensive, user-friendly and better interaction. Specification: Model(Optional) VAT-1050 VAT-1100 VAT-1200 VAT-1300 VAT-4300 Voltage measurement range 0~100V 0~100V 0~100V 0~100V 0~400V Voltage resolution 0.01V 0.01V 0.01V 0.01V 0.1V Current measurement range 0~50A 0~100A 0~200A 0~300A 0~300A Current resolution 0.01A 0.1A 0.1A 0.1A 0.1A Relay External  External  External  External  External  Temperature measurement range -20~120 ℃ Capacity display range 0%~100% Power measurement range 0~200kW Power resolution 0.001W AH measurement range 0~2000kAH Capacity resolution 0.001AH Watt-hour measurement range 0~4000kWH Watt-hour accuracy 0.001WH Time measurement range 0 ~ 99 days Time resolution 1 second Communication channel range A ~ Z (26 channels) Communication channel range 01~99 Voltage accuracy ± 2% + 3 words Current accuracy ± 5% + 10 words Sampling rate 5 times / second Communication distance up to 10 meters Measurement module power consumption About 0.4W Display module power consumption 0.5W NCP 0 ~ 300A (negative over-current protection setting) OCP 0 ~ 300A (positive over-current protection setting) OVP 0 ~ 100V (over-voltage protection setting) LVP 0 ~ 100V (under-voltage protection setting) protection delay time 0 ~ 10s Weight 453g / 16oz Package list: 1 * Meter Display 1 * Meter Module 1 * Data Cable 1 * Temperature Sensor Probe 1 * 2P Cable Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.