Voltage: used for DC 12v or 24v car
Screen digital color: red
Installment: insert the jack of the product into a cigar socket
Brand new and high quality.
This digital gauge displays the voltage of batteries in the car.
With high brightness of LED there is no difficulty in seeing the display.
Powered by car cigarette lighter charger.
Constantly monitor battery voltage, extend and protect the battery and engine life.
Clean the Cigar socket.
Insert the jack of the product into a Cigar socket.