Extech MG310 Compact Digital Insulation Tester

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Wide Testing Range for Any Job - Handle insulation resistance tests up to 2000MΩ with selectable voltages of 250V, 500V, or 1000V. Perfect for troubleshooting motors, transformers, and industrial wiring systems. Clear & Easy-to-Read Display - Large LCD screen with dual readout makes it simple to monitor insulation resistance and test voltages, even in dimly lit or busy environments. Hands-Free Operation When You Need It - Convenient lock power-on function allows continuous testing without holding the button, making repetitive insulation checks safer and less fatiguing. Built Tough for Professionals - Rugged design ensures durability for field technicians and maintenance crews, with reliability you can count on in demanding electrical and industrial applications. Complete Kit Ready to Work - Includes test leads, batteries, and carrying case, so you can get started immediately. Ideal for electricians, HVAC techs, and plant engineers who need accurate results fast.