Sperry Instruments VD7504GFI DualCheck 2-in-1 Non-Contact Voltage Detector + GFCI Outlet Circuit Analyzer, 360 Visual Audible Indicators, 50-1000V AC, 250 lb. Crush Rating Sperry Instruments VD7504GFI DualCheck 2-in-1 Non-Contact Voltage Detector + GFCI Outlet Circuit Analyzer, 360 Visual Audible Indicators, 50-1000V AC, 250 lb. Crush Rating Features SAVE TIME AND MONEY: With 2 popular testers in 1 unit - featuring a non-contact voltage detector on one end and GFCI outlet tester on the other DURABLE: Hi-Impact Resistant Polycarbonate Housing with soft over-molded rubber grips with a compact ergonomic design INDUSTRY LEADING: Advanced ground testing circuitry precisely detects the required low resistance values CIRCUIT SENSING: Non-Contact sensitivity detects 50-600V AC and 50-60Hz AUDIBLE AND VISIBLE INDICATOR: 360 visual and beeping audio Non-Contact Voltage Detection RATED: 10 ft Drop and 250 lb Crush, CAT Rating III 1000V, C-UL US, CE-Marking and recognized by Occupational Safety Hazards Association (OSHA) as an National Recognized Testing Laboratory (NRTL)