12VDC black red LED light three-digit voltmeter CE certification, marine, automobile and motorcycle use, waterproof function, easy to read the voltage level, LED light shows clearly at night (optional wiring harness) Product parameters: 1.12VDC transparent three-digit voltmeter with LED lights CE certification, for ships, automobiles and motorcycles, with a small ring-shaped lattice design, the voltage level is easy to read, and the LED lights show clearly at night. 2. It can show that the battery is in saturation and low voltage state. 3. Able to display the charging status of insufficient voltage or bad voltage, showing whether the battery is keeping charging or not. 4. Installation requires a 29mm mounting hole, and the product should be locked and fixed with a nylon threaded fixing ring. Measuring range: 5-48 (V) Input voltage: 5-48 (V) Output voltage: 5-48 (V) Voltage measurement error: 0.1 Weight: 16 (g) Dimensions: 33*17(mm) Package List: 1pcs *Marine Boat Voltmeter