Features: 1. SAFE MATERIAL: The Coulomb meter uses excellent industrial ABS with impact resistance and high temperature resistance. PVC flame retardant material shell, safe and reliable 2. WATERPROOF SCREEN: The Coulomb meter screen is waterproof and transparent, the sliding cover is easy to remove and install, and whether the screen is upward or (at an angle of less than 45°) it can be rainproof 3. EASY TO DETECT: The battery capacity Coulomb meter uses Hall sensors to facilitate charging and discharging and two-way current detection without breaking or connecting cables 4. DISPLAY PARAMETERS: This is a multifunctional Coulomb meter, which can display voltage, real-time current, peak current, real-time power, peak power, capacity, energy, running time and multiple physical parameters in real time 5. COLLECTION MODE: The voltage current Coulomb meter collects current using a non-contact Hall sensor, which is safe, stable and easy to connect Specification: Item Type: Battery Capacity Coulomb Meter Material: ABS Specification: 120V 50A. Package List: 1 x Screen 1 x Hall Sensor 1 x 50 cm x H2.54 Red and Black Line 1 x 3 meter Extension Cable 1 x Flat Cable