Feature: 1. Can measure a variety of parameters, such as voltage, current, power, charge and discharge capacity, power, time and temperature, etc. 2. The product adopts TFT LCD screen, display information is comprehensive and has good interactivity. 3. The wireless transmission communication distance is 10 meters, and the display module can display. 4. Whether it is day or night, it is clearly visible, bringing you a better visual experience. 5. This product can use USB cable directly without power supply, and has accurate measurement result. Specification: Item Type: Coulomb Counter Material: Plastic + glass Temperature Measurement Range: -20~120℃ Capacity Display Range: 0%~100% Power Measurement Range: 0~200kW Power Accuracy: 0.001W Amp-Hour Measurement Range: 0~2000KAH Capacity Accuracy: 0.001AH Watt-Hour Measurement Range: 0~4000kWH Watt-Hour Accuracy: 0.001WH Time Measurement Range: 0~99 days Time Accuracy: 1 second Communication Channel Range: A~Z (26 channels) Mailing Address Range: 01~99 Voltage Accuracy: ± (2%+3 words) Current Accuracy: ± (2%+10 words) Sampling Rate: 5 times/sec Communication Distance: up to 10 meters Measuring Board Power Consumption: About 0.4W Display Meter Power: About 0.5W NCP: 0~-300A (negative overcurrent protection setting range) OCP: 0~300A (forward overcurrent protection setting range) OVP: 0~100V/400V (overvoltage protection setting range) LVP: 0~100V/400V (undervoltage protection setting range) Protection Delay Time: 0~10s Display Size: Approx. 9.8 x 5.4 x 2.1 cm / 3.9 x 2.1 x 0.8 in Measurement Module Size: Approx. 11.32 x 5.72 x 4.88 cm / 4.5 x 2.3 x 1.9 in . Package List: 1 x Instrument Display 1 x Electric Meter Module1 x USB Data Cable1 x Temperature Sensor Probe1 x Red and Black 2P Cable1 x Manual