Universal Car Motorcycle Temperature Voltmeter 12V-24V LED Panel Digital Display Features: It is used to monitor battery voltage. It has reverse polarity protection function, which will not burn out the circuit, waterproof and durable, safe and reliable to use. This round panel voltmeter is easy to read, and the real-time monitoring of the battery voltage is convenient for you to know the status of the electrical quantity in time. Made of PC, it's high quality materials, it's durable. The length of this product is 36cm, width is 24cm, and height is 27cm. It is suitable for motorcycles, cars, ships, ATVs, RVs, caravans, trailers, etc. Specification: Item name: Voltmeter Material: PC Input Voltage: 12-24V Output voltage: 5V Operating temperature: -40 degrees Celsius to 80 degrees Celsius Housing color: black Aperture Color: Red, Blue The package includes: 1 X Round Temperature Voltmeter 2 X Isolated Connectors