Review on 🔌 High-Voltage Insulation Tester: 50k-2G Insulation Resistance, Megohmmeter, Multimeter, DC/AC TRMS Voltage/Current, Resistance, Capacitance, Frequency, Temperature by Paul Gravely

This ProLogic multimeter isn't cheap, but if you need to test the insulation resistance of a cable, it's inexpensive. Common multimeters that cost $100 or less cannot test wire insulation. Since I'm installing underfloor heating in my bathroom, I had to check the wire insulation for leaks that could trip the GFCI. . With one exception, both delivered almost identical readings. The ProLogic multimeter read "greater than 2 gigaohms" while the Fluke multimeter read "greater than 11 gigaohms". The Fluke is certainly an excellent industrial force gauge for testing insulation resistance, but it doesn't do much, so it lacks the versatility of a ProLogic multimeter. I sent back Fluke and kept ProLogic.