Enhance your electrical monitoring with this high-precision Digital Voltmeter, designed for accurate real-time measurement and display of AC voltage, frequency, and cumulative running time in electrical circuits such as generators. Constructed from durable anticorrosion plastic, this voltmeter offers excellent stability, strong anti-interference capabilities, and reliable long-term performance, making it an ideal upgrade over traditional analog meters. Key Features: · **High Measurement Accuracy & Stability**: Provides precise voltage readings within a 90-450V range with 1V resolution and 1.5 level accuracy, ensuring dependable monitoring for your electrical systems. · **Multi-Function Display**: Simultaneously measures AC voltage, frequency (0-99Hz with 2.5 level accuracy), and cumulative running time of generators, displayed clearly on a 3-digit LED screen for easy interpretation. · **Cumulative Running Time Tracking**: Tracks generator operating hours including power outage time, with a timing range up to 999 hours, enabling efficient maintenance scheduling and improved machine management. · **Durable Plastic Construction**: Made from anticorrosion plastic material, this voltmeter is resistant to wear and damage, ensuring a long service life even in demanding environments. · **Easy Installation & Replacement**: Features a snap fastening design and plug-in wiring method for quick and hassle-free installation or replacement, making it a practical accessory for diesel generators and other power equipment. · **Wide Operating Conditions**: Operates reliably within a temperature range of -25°C to 70°C and humidity levels of 20-90%, suitable for diverse working environments. Specifications: · Material: Anticorrosion Plastic · Model: 91 3 Single Phase 3 Phase · Weight: Approx. 25g / 0.9oz · Voltage Detection Range: 90-450V (Input Voltage), Resolution: 1V, Accuracy: 1.5 Level · Frequency Detection Range: 0-99Hz, Accuracy: 2.5 Level · Display Method: 3 Digit LED Digital Display · Cumulative Operating Time: Up to 999 Hours (Including Power Outage Time) · Wiring Method: Plug In Connection · Installation Method: Snap Fastening · Operating Temperature: -25°C to 70°C · Storage Temperature: -40°C to 70°C · Humidity: 20-90% Package Includes: · 1 x Digital Voltmeter This Digital Voltmeter is an essential tool for monitoring and maintaining the efficiency of generators and other electrical equipment. Its accurate readings, durable construction, and user-friendly installation make it a reliable choice for enhancing the performance and longevity of your power systems.