DROK® Waterproof Digital Voltmeter Gague Two Wires Voltage Tester Meter DC 3.3-30V Volt Meter 0.52" Red LED Display for Electrocar Motorcycle;

Parameters: Operating Voltage: DC3.3-30V Operating Current: Display: 0.52" LED red Dimension: 54 L*30 W * 27H mm Installing Size: 47.2*27.3 Testing Rate: >500mS/once Testing Accuracy: 1%（±1 digit） Protection for Reverse connection: yes Extreme working conditions: Minimum Operating Voltage: + 3.3V Maximum Working Voltage: + 30V (The highest voltage can't be over 30V) Working Temperature: -10 ~ + 65 ℃ Working Humidity: 10 to 80% (non-condensing) Working Pressure: 80 ~ 106kPa Sun Exposure: no direct exposure Wiring Instructions: Red wire: + Black wire: - Package Includes: 1 X 2 Wires Waterproof Red Display Digital Voltmeter