Parameters:
Accuracy: 1％±2 digits .
Display: LCD displayer .
Measuring Range: AC 80-300.0V .
Testing Frequency: 45-65.0Hz .
Measuring Velocity: 2 times/sec .
Product Size: 70 mm x 40 mm x 30mm（LWH） .

Extreme Working Condition:
Operating Temperature: -10～+50℃ .
Operating Humidity: 10～80%(no condensation) .
Working Pressure: 80～106kPa .
Sunlight Irradiation: No .

Note:
1.Needn't power supply: you can dirrectly connect two wires to the tested voltage to measure voltage and frequency .
2.This meter is only suitable for AC45-65Hz mains supply, This voltmeter is designed using the principle of capacitor step-down. Because the higher the frequency, the smaller the impedance of the capacitor, so it is not suitable for high-frequency electronic speed regulation, unconventional AC sine wave frequencies, or other high-frequency equipment. Otherwise, it may appear inaccurate test or damaged voltmeter..

Package Included:
1× Digital AC Voltmeter AC80-300V Frequency Counter 45.0-65.0HZ LCD Display Voltage Frequency 2 in 1 Meter Tester

If you for any reason are not happy with any product supplied , please do not hesitate to contact us and we will do our best to solve your problem .