Feature: 1. MULTIPLE FUNCTIONS AND PROTECTION: The coulommeter can measure voltage, current, power, charge and discharge capacity, watt hour, time and other physical parameters. You can also set parameters to implement multiple protection functions, such as overvoltage protection, undervoltage protection, overcurrent protection, overpower protection, and overtemperature protection 2. EXCELLENT ACCESSORIES AND EXQUISITE APPEARANCE: Battery monitor shortcut keys made of silicone material, which not only greatly simplifies operation steps, but also feels comfortable. Acrylic panel design can effectively protect the screen, easy to clean, dustproof and better light; The shunt and screws are made of brass material with good conductivity, low calorific value and low power consumption, does not consume too much battery power in standby mode; After the new interface is optimized and upgraded, the font is larger and the layout is more reasonable, which is clear at a glance 3. BUILT IN BUZZER: When a certain value of battery monitor exceeds the preset protection limit value, will start the protection function of the instrument, and the alarm sound will sound and popup window will remind or disconnect the circuit through the relay to protect the instrument from damage (relay needs to be equipped separately) 4. REAL TIME MONITORING: Automatically recognize and monitor current in charge or discharge directions, Voltmeter can automatically recognize current direction and monitor battery capacity in real time 5. VARIOUS CONTROL MODES: Voltage tester supports display control, can provide protocol, using 485, the secondary development can be carried out on the development tools such as serial assistant. Can switch addresses. Can switch addresses, respectively control 99; Supports mobile APP control. After downloading and installing the APP, you can view all relevant data and curves on the APP through the built in Bluetooth connection, and set all functions through the mobile APP 6. APPLICABLE SCENARIO: Voltage Tester has 2.4in color display, display current function menu, parameter setting and measurement data, display information is comprehensive and user friendly, charging and discharging at a glance, make your journey without worry. Whether acid batteries, ternary lithium batteries or lithium iron phosphate, or other types of batteries, as long as the battery voltage is within the measured range, all will work Specification: Item Type: Smart Battery Monitor Model: KH140F Material: Acrylic, brass, silicone Screen: 2.4in color LED screen Sampling Mode: Shunt Voltage Measurement Range (external power supply): 0-120V Voltage Measurement Range (self powered): 10-120V Voltage Resolution: 0.01V Current Measurement Range: 0~400A Current Resolution: 0.01A Relay: No relay provided, needs to be configured by yourself Temperature Measurement Range: -20-120℃ Capacity Display Range: 0% to 100 percent Power Measurement Range: 0~72KW Power Resolution: 0.01W Ampere Measuring 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: 59S Time Resolution: 1 Second Bluetooth Distance: Barrier Free Distance: Up to approx. 10meter / 32.8ft Voltage Accuracy: ±1%+2 words Current Accuracy: ±1%+5 words Sampling Rate: 1 time per second Measuring Board Power Consumption: About 0.4W Display Head Power Consumption: About 0.5W Over Power Protection: 0-99999.99W Discharge Overcurrent Protection: 100A Charge Overcurrent Protection: 100A Undervoltage Protection: 0 to 120V External Overtemperature Protection: -20-120℃ Protection And Recovery Time: 0-99s Standby Time: 0-60s Delay Time Setting: 0-99s Mailing Address: P01-P99 99 in total. Package List: 1 x Display Module1 x Measurement Module1 x Sampler1 x Temperature Sensor1 x 5meter Line1 x 3P Row Line1 x 4P Row Line1 x 3P Wiring Terminal1 x User Manual