MakerFocus 2pcs Mini Digital DC Voltmeter 0.28 Inch Two-Wire 3.0V-30V Waterproof

Features:1 Waterproof, dustproof and drop resistant2. High precision3. Reverse connection protection4. The decimal point is automatically shifted. When the voltage below 10V, the number of digits displayed on the voltmeter is 0.01;  When higher than 10V, the number of digits displayed on the voltmeter is 0.1 and is automatically shifted.Specification:Detection voltage: DC 3.0V ~ 30VWorking current: <30mADisplay: 0.28 inch LEDInstallation hole: 23 * 10mmMeasurement rate: ≥200ms / timesMeasurement Accuracy: 3 %The mininumn working voltage: 3.0VThe maximum working voltage: 30VOperating temperature: -10 ~ +65 ℃Working humidity: 10~80% (No condensation)Working pressure: 80~106kpaColor: Blue, Red   Packing List: 1 * Blue Two-Wire 3.0-30V Digital DC Waterproof Voltmeter1 * White Two-Wire 3.0V-30V Digital DC Waterproof Voltmeter