High-definition 2.0-inch color screen display: adopts 2.0-inch color LCD screen, provides clear and intuitive data reading experience, whether it's day or night, you can easily view the voltage and current and other key information to your driving safety. Bidirectional Current Detection Technology: Supporting forward and reverse current monitoring function, it can accurately record the current value changes under vehicle charging and discharging status, helping you to fully grasp the health of the battery and prolonging its service life. Wide compatibility: This battery indicator is designed to fully consider the needs of different users, with simple wiring and suitable for almost all battery types on the market, making the installation more convenient and hassle-free. Isolated measurement: Adopting the advanced isolated measurement program, which ensures high and greatly improves the safety of use, effectively preventing the original line from being damaged, providing users with reliable protection. Strong applicability in multiple scenarios: customized and developed specifically for many types of electric transportation, including but not limited to RVs, sightseeing cars and electric cars, etc., it is an indispensable and ideal companion for both daily commuting and long-distance travel. Operating voltage: DC 10~100V Capacity detection range: 0.1~9999Ah Current range: 400A Backlight on power consumption: 3~15mA Backlight off power consumption: 2.1~11mA Sleep power consumption: 300uA Acquisition Accuracy: 1.0% Ambient temperature range:-10~60 Product size: 79 x 43 x 27mm Opening size: 71.5 x 39.5mm Hall sensor size: 55 x 49 x 15mm Specification: 400A Color: As Shown Material: plastic Package Contents: 1 * Display 1 * Hall sensor 1 * XH2.54 red and black wire 15cm 1 * 4P shielded cable 30cm Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.