AC Voltmeter Frequency Meter Dual LED Display

1 AC 80-500V LED dual display of AC voltage and frequency in the same time. 2 The data is more intuitive, LED two-color display, red + green, clear and easy for monitoring at a glance. 3 Do not need power supply, two wires just connect with AC 80-500V directly, then you can finish testing. 4 Easy to install, embedded buckle installation, more stable. 5 Meter only fits with pure AC 45-65HZ power supply, not be used for square wave, inverter output.

What's in the box
1 x Voltmeter Frequency Meter