KETOTEK Frequency Meter Voltmeter Gauge Voltage Hertz Tester Panel AC 80 300V 45 65Hz Volt Freq Dual Display LED

Voltage and frequency can be displayed with different color on the LED screen, red for voltage, green for frequency. It is clear and convenient to read. Voltage measuring range: AC 80-300V, Hertz measuring range: 45-65Hz, Accuracy: 1% ± 2 digits, with high working efficiency of 2 times/s measuring speed. This frequency meter can directly connect two wires to the tested voltage to measure voltage and frequency without power supply. 2.68×1.65×1.5inch / 68x42x38mm. This frequency meter can be installed on anywhere flexibly. Operating temperature: -10℃-50℃. Note: This AC voltmeter meter only suits for pure AC 50/60Hz power supply and can NOT be used for square wave, inverter output and sine wave circuit measurement of modified sine wave, otherwise the meter will be damaged.