Features: 1. Two-wire LED voltmeter panel, able to measure voltage range of DC 2.4-30V. 2. 0.36 inch digital LED display, reading is clear and convenient. 3. Produced in a dust-free workshop, using imported original chip. 4. Low power consumption, high stability, high accuracy. 5. Designed to international standard size for easy installation. Specification: Condition: Item Type: DC Voltmeter Working Voltage: DC 2.4-30V Measuring Range: DC 2.4-30V Installation Opening: Approx. 23 * 14.5mm / 0.9 * 0.6in Minimum Operating Voltage: +2.4V Maximum Working Voltage: +30V Working Temperature: -10°C ~ +65°C Working Humidity: 10~80% (No Condensation) Working Pressure: 80~106KPa Dimensions: Approx. 33 * 15 * 10mm / 1.3 * 0.6 * 0.4in Voltmeter Digital Tube Color: Yellow Package List: 5 * DC Voltmeter Note: 1. Please allow slight variation due to manual measurement. 2. Colors may vary slightly due to different monitor settings. Please refer to the actual product for accurate appearance.