1. Application: panel voltmeter is widely used in electrical power, telecommunication, machine tool, ship, textile, printing, mining machinery and other industries
2. Made of plastic, durable and wear-resistant
3. High brightness LED display, measurement results intuitive display
4. Digital voltage measurement field with signal display, can be used as a signal display, alarm signal, accident signal
5. Built-in wiring screws, safe and convenient to use, solid structure, suitable for long-time work
6. Professional practical design, beautiful appearance, easy to carry and use
7. When there is no signal input, prompt message: display 000
8. This product is prohibited for frequency conversion, high frequency, inverter, harmonic interference signal strong power environment, applicable to sinusoidal 50-60HZ AC frequency utility power

Parameters:
1. Input voltage: AC 220V
2. Voltage measurement range: AC 50-500V
3. Frequency compatible range: 50-60hz
4. Accuracy: 2 percent +/- V
5. Display resolution: 1V
6. Sampling rate: about 1 time/s
7. Input circuit power consumption: less than 2VA
8. Ambient temperature: -25-55 degrees celsius
9. Product size: 73 x 73 x 52mm
10. Installation aperture: 68 x 68mm