Features: 1.With LED digital display, shows 3?bits for easy read, twist?and?lock design, convenient to use. 2.Real?time detection of car battery voltage, fits for connecting to 12V system. 3.Universal voltage meter suitable for car, motorcycles, boats, caravans, campers, etc. 4.Small in size, easy to install and operate, the touch on/off makes it energy?saving. 5.PC flame?retardant shell, with reverse connection protection function, will not burn the circuit, safe to use. 6.Used to monitor the voltage of the battery, inform the battery voltage status in time, can also be used for other products. Specification: Condition: 100% Brand New Item Type: Voltage Meter Material: PC Shell Color: Black Features: Waterproof; Flame retardant material Interface Type: Anode and Cathode Application: Universal for All Car, Motorcycles and Other Models Input Voltage: 12-24V Output Voltage: 5V Output Current: 1000mA Working Temperature: -40-60 Applicable Charging Range: 12-24V