Feature: 1. Digital Voltmeter: It features high measurement accuracy, good stability, intuitive readings, and strong anti interference capabilities, making it an 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 to damage. Practical 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. Specification: Item Type: Digital Voltmeter 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)% Material: plastic colour: Black Package Contents: 10 x Digital Voltmeter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.