Features MULTIPLE FUNCTIONS: This coulomb meter can measure voltage, current, power, charge and discharge capacity, watt hours, time, etc. It automatically identifies the direction of current and monitors battery capacity in real time. CIRCUIT PROTECTION: This battery monitor can set parameters to achieve overvoltage protection, undervoltage protection, overcurrent protection, overvoltage protection, over temperature protection, etc., safe and reliable. DURABLE MATERIAL: Silicone shortcut keys have a comfortable feel and simplify the operation steps, the acrylic panel effectively protects the screen with better light transmittance, the brass shunt and screws ensure good conductivity. BUILT IN BUZZER: When the value exceeds the pre set protection limit value, the instrument protection function will be activated, the alarm will sound and remind, and the circuit will be disconnected through a relay (not included). MULTIPLE CONTROL: Support monitor control, use 485 comm and other tools for secondary development, support mobile APP control, with BT connection, can view all relevant data and curves on the APP , and set all functions. Specification: Item Type: Battery Monitor Model: KH140F Material: ABS, Brass Screen: 2.4 Inch Color LED Screen Sampling Method: Shunt Voltage Measurement Range (External Power Supply): 0-120V Voltage Measurement Range (Self Power Supply): 10-120V Voltage Resolution: 0.01V Current Measurement Range: 0-400A Current Resolution: 0.01A Relay: No relay provided, requires self configuration Temperature Measurement Range: -20-120℃ Power Measurement Range: 0-72KW Power Resolution: 0.01W Ampere Hour Measurement Range: 0-9999.99Ah Capacity Resolution: 0.001Ah Watt Hour Measurement Range: 0-9999.99kWh Watt Hour Resolution: 0.001Wh Time Measurement Range: 0-999: 59: 59 second Time Resolution: 1 second Accessible BT Comm Distance: Up to 10 meters Voltage Accuracy: ±1%+2 words Current Accuracy: ±1%+5 words Sampling Rate: 1 time Per second Measurement Board Power Consumption: About 0.4W Display Meter Power Consumption: About 0.5W Overpower Protection: 0-99999.99W Discharge Overcurrent Protection: 100A Charging Overcurrent Protection: 100A Undervoltage Protection: 0-120V External Over Temperature Protection: -20-120℃ Protection Recovery Time: 0-99s Enter Standby Time: 0-60s Delay Time Setting: 0-99s Comm Address: P01-P99, 99 in total Package List: 1 x Display Module 1 x Measuring Module 1 x Sampler 1 x Temperature Sensor 1 x 5 Meter Comm Line 1 x 3P Flat Cable 1 x 4P Flat Cable 1 x 3P Wiring Terminal Note: Please read the manual carefully before use. Package List 1 x Display Module 1 x Measuring Module 1 x Sampler 1 x Temperature Sensor 1 x 5 Meter Comm Line 1 x 3P Flat Cable 1 x 4P Flat Cable 1 x 3P Wiring Terminal