1,Digital Voltmeter: It features high measurement accuracy, good stability, intuitive readings, and strong anti interference capabilities, making it an ideal replacement for traditional pointer instruments. 2,Function: The digital voltmeter is a digital instrument used for real time measurement and indication of AC voltage, frequency, and cumulative running time in electrical circuits such as generators. 3,Plastic Material: Voltage Meter is made with anticorrosion plastic materials, ensuring long lifespan. Providing high reliability and performance. 4,Easy Replacement: Easy to install, with stable performance and resistant to damage. Practical diesel generator accessories that make replacing old parts easy. 5,Improved Efficiency: Regularly replacing parts can enhance the efficiency and lifespan of the machine, making it highly suitable for long term use. Item Type: Digital Voltmeter Material: Plastic Weight: Approx. 25g / 0.9oz Signal Source: Mains Power Generator Voltage Detection Range: Input Voltage: 90-450V, Resolution: 1V, Display Method: XXX, Accuracy: 1.5 Level (Decimal Voltage Is Calculated Using Rounding) Frequency Detection Range: 0-99Hz, Resolution: 0.1Hz, Display Method: XX:X, Accuracy: 2.5 Level Cumulative Operating Time: Cumulative Running Time Of The Generator With Power Outage Time Saved, 3 Digit Led Display With A Timing Range Of 999 Hours (In Hours) Display Method: 3 Digit Led Digital Display Wiring Method: Plug In Connection Installation Method: Snap Fastening Model: 91 3 Single Phase 3 Phase Operating Temperature: -25-70℃ Storage Temperature: -40-70℃ Humidity: (20-90)% 1 x Digital Voltmeter Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.