Review on 📟 LM YN Digital AC Voltmeter: Accurate Voltage and Frequency Testing with LCD Display - 2 in 1 Meter Tester by Austin Arvayo

This is the BEST AC Voltage/Frequency Meter you can buy from Revain. Well designed, easy to connect - only two wires to the source (120VAC) and EXTREMELY ACCURATE - excellent calibration - right on the nose! Matches my expensive Fluke true RMS multimeter with an accuracy of 0.1%! Remember that this is an AC voltmeter calibrated to mean RMS value, so it is absolutely accurate on sinusoidal (sinusoidal) signals such as those from your utility. However, it can be inaccurate by a few percent when measuring AC voltage from inverters (square wave output) or generators and UPS backups (open or distorted sine wave output). Overall excellent value for money!