UNI-T UT501A Insulation Resistance tester meter megger earth ground resistance Voltage Tester Megohmmeter Voltmeter + Backlight

Used in my business to test heating elements its well made and reliable with various voltage test limits, this represents excellent value for money.

This is great in the tool box. Strong case and great for quick testing of the odd replacement cable runs. Obviously it’s not suitable for full post testing of a CU change etc, but it doesn’t claim to do that. I really like this and would recommend it for functionality and price.

I bought this is pinpoint a fault in an outdoor circuit, which it did perfectly. It has selectable voltages from 100 to 1000V (500V worked for me in this case). It works off AA batteries, with a latching button to start the meggar test. As others have said, the leads and crocodile clips are of good quality with a secure screw in connection - worth the extra few quid over cheaper models when dealing with these kinds f voltages.Note, that the latching button can easily be switched on my accident - so prior to switching the unit on, it is important to check that the button is out. The test leads are around a metre long, which may be too short if connecting to wiring at a, say, a light switch if you want to place the tester on the ground. These are my only gripes, and are not too significant.

Meter is compact, leads are good quality, you must understand testing procedures to use.Good value for money, instructions are good and a free mains voltage indicator screwdriverTime will tell how robust it is.

Received before estimated day and well packaged.My impression of the instrument is all good.The accuracy of all parameters was well within limits and actually quite impressive: 500v output was 506v and 1000v - 1023v. 1.0m ohm leakage was 998 k ohm.All measured with a currently specified Fluke multimeter.In all a very good, accurate instrument.

Nice unit and good value.

I have used some meggers before so comparing with similar unit. This one as soon as you take measurement, it makes crackling noise. It is bit concerning as it sounds like something is not very well made/insulated inside. It works okay, just concerning when you are sending 500V from the crackling box... It just makes you not wanting to touch it.

Cheep tester, ideal for someone who is at college training to become anelectrition, this is a great starter test instrument