Description: Product Name: D3 Voltmeter Method of taking electricity: insurance/battery LED lamp color: red, green and blue Product material: fireproof ABS Opening size: 27MM Voltage monitoring range: 5-48V Specifications: 1.12VDC transparent belt LED light three-digit digital voltmeter CE certification, used for ships, automobiles and motorcycles, with a novel design of a small ring grid, easy to read the voltage level, and the LED light is displayed clearly at night 2. It can display the battery in saturation and low voltage state 3. It can display the charging status of insufficient voltage or poor voltage, and whether the battery is being charged or not 4. The installation requires a 29mm mounting hole, and the product is locked and fixed with a nylon threaded fixing ring. Package Included: 1 * voltmeter