1、Waterproof Exterior: The exterior of this coulometer is waterproof, and wear and corrosion resistance, you can not worry about it being damaged on the wall after you install it. 2、Multi Functional: Our meter has several functions, it can observe voltage, battery percentage, have backlight, sleep mode, battery type selection and so on. 3、Easy to Connect: The meter is very safe and easy to connect, just follow the normal process to install successfully, sturdy and durable. 4、Light Weight: Our meter is compact in design and light in weight, very portable, you can carry it around with you at any moment and put it to work. 5、Security Protection: The meter has a stylish appearance and also has a security protection capability, such as reverse connection protection, which can ensure that the coulometer is not burned when the reverse connection is made. Item Type: Battery Monitoring Meter Material: ABS, Copper Model: TF03KH B 1 x Battery Monitoring Meter 1 x Shielded Wire 1 x User Manual 1 x Sampler