Item Type: Battery Monitor_x000D_ Material: Environmentally Friendly ABS, Metal_x000D_ Model: TF03K_x000D_ Voltage Range: 8-120V_x000D_ Current: 50A (0-75A) 1COMPACT SIZE: Multifunctional battery indicator, waterproof surface, light weight and small size, can be used in RV, convenient and practical. 2MULTIPLE FUNCTION: Support voltage meter switching, battery capacity percentage, turn on and off backlight, sleeping mode and battery type selection. 3SAFE OPERATION: The battery level tester has a reverse polarity protection design, which will not be burned during use, ensuring safe operation. 4WORKING RANGE: The voltage range is 8?120V, with shielded wire, this battery tester is easy to connect and use, and has a wide range of applications. 5CLEAR DISPLAY: The battery capacity meter has a clear display, which is convenient for quick reading and greatly improves the detection efficiency. 1 x Battery Monitor 1 x Shielded Wire 1 x User Manual 1 x Sampler