Circuit Analyzer AC100-240V RMS Circuit Analyzer Tester MASTECH MS5908A LCD Circuit Analyzer, Voltage Detector GFCI RCD Fault Tester (MS5908A US Plug)

Great product

This meter has proven to be invaluable to me as a homeowner who likes to do his own electrical work and TShoot friends and family electrical problems...I can attest the meter is quite accurate for the measurements I can compare with my Fluke 87-V... If one understands electricity and basic ohms law then this meter should be a snap to use...The voltage drop under digital loads and the impedance readings for the hot, neutral and ground with a live circuit is very useful...Along with the voltage drop these impedance readings can help diagnose issues as you work back on a circuit toward the main..The trip tests for standard and GFCI breakers can help determine if breakers are failing or just plain dont trip when they should... I do wish this meter gave a relative load reading on the circuit before doing each amperage load test...I believe the Ideal tester does this, but then again it cost $300... I believe this Mastech is accurate enough for the DIYer who doesnt want to spend $300 on a meter they may use only once a month or even less...The Mastech brand has been around for years so that lends some credibility as to the potential longevity of this meter...Overall, for the price its a quality purchase...

Very easy to use, but compared to $300 testers, the accuracy is off a bit-not a lot, but a few percent. Tests GFCIs but NOT AFCIs but both should be tested with the button on the device anyway. Takes SIX AA Batteries. Why not just a single 9V? Overall, great for a handyman and a back-up for a home inspector.

this is a great tester, very easy to understand, and use, very helpful for helping in wiring my house