Features: LED digit display type with blue LCD backlight color. High accuracy and easy to install. Working power supply of AC or DC 9V-12V. The Shunt is used to multiply the measuring range of current. Strong anti-jamming capability Appearance with standard size. Could be used either in a Digital or an Analog meter. Specifications: backlight color: Blue Digital display type: LED Working power supply: AC or DC 8V-12V Measuring range : DC 100A Accuracy : +/-0.5% Shunt current: 100A Shunt voltage drop: 75mV Ampere size : 81 * 43 * 24mm / 3.2 * 1.7 * 1in Ampere weight: 40g / 1.41oz Shunt size: 10.8 * 2.3 * 1cm / 4 * 0.9 * 0.4in Shunt weight: 144g / 5.07oz Package weight: 192g / 6.77oz Package size: 10.8 * 4.5 * 5.5cm / 4 * 1.8 * 2.2in Package List: 1 * DC 100A Digital Display Ammeter 1* 100A/75mV Shunt Resistor