Multimeter for modified sine wave

have you ever measure the modified sine wave output with a multimeter?if you have had to measure the output of modified sine wave inverter with a multimeter then how did it go? whether accurate?

Ordinary multimeter is not accurate to measure the modified sine wave, as if measured with a multimeter usual result is much lower. you must use a multimeter with true rms feature

if you use a multimeter with true rms feature then secured volts measured results guaranteed accuracy

The rated voltage is an RMS (root mean square--they square the value to make sure it is always positive, then average it, then take the square root of the average to make up for having squared it in the first place) measurement. Most multimeters are designed to give correct RMS readings when applied to sine waves, but not when they are applied to other waveforms. They will read from 2% to 20% low in voltage. Look for a voltmeter that braggs about "True RMS" readings.