🔍 Unleash the Power of Precision Testing! Designed with IEC-1010 double insulation for peace of mind. Enjoy a 2-year quality warranty for ultimate confidence. Measure AC high voltages from 1V to 750V effortlessly. Choose from 100V to 5000V for tailored testing needs. Experience accuracy within 3%~10% with a 5-digit display. 5kV test voltage 200GΩ max resistance IEC-1010 safety rated The BTMETER BT-6688B Megohmmeter is a cutting-edge digital insulation resistance tester that measures high insulation resistance up to 200 Gig Ohms with selectable test voltages ranging from 100V to 5000V. It features a user-friendly backlight display, robust safety standards, and a 2-year warranty, making it an essential tool for professionals in electrical testing.