Feature:1. [Real Time Monitoring] This coulometer provides real time display of voltage, current, power, remaining capacity, and usage time, offering comprehensive and clear data on its low power LCD screen.2. [Convenient Hall Sensor] Equipped with a Hall sensor, this battery monitor allows for easy wiring, enabling bi directional current detection for charging and discharging.3. [Bluetooth Connection] This battery meter allows you to view all relevant data and curves, as well as set parameters and operate functions through WeChat mini program.4. [Reliable Material] Encased in ABS material, this monitor exhibits high impact resistance and is capable of withstanding low temperatures, ensuring safety and reliability.5. [Wide Application] This battery tester is suitable for monitoring output voltage, current, battery charging, and discharging in various applications that require accurate battery monitoring and control.Specification:Item Type: Battery MonitorMaterial: ABSSpecifications: 120V 200A.Package List:1 x Battery Monitor1 x Hall Sensor1 x 3 Meter Shielded Cable1 x 50cm x H2.54 Red and Black Wire1 x Flat Cable1 x Instruction Manual