This is a very good meter for its price range.
It's very accurate and picks up just about everything in its advertised frequency range of 16 Hertz to 100,000 Hertz (100 kHz).
It can even pick up dirty electricity to an extent, though it is not a replacement for the Stetzerizer Meter.
You may also consider the upgrade to this meter - the ME3840B. The 3840 adds slightly greater frequency range, and a very handy frequency filter to help you focus in on what you're measuring.