DURABLE: Hi-Impact Resistant ABS housing with soft over-molded rubber grips with a compact ergonomic design (GFI6302 and VD6504) QUICKLY READ: Bright color-coded neon lights for easy visual indication (GFI6302) TESTING CAPABILITY: Standard 3-Wire and GFCI protected 120Volt AC Outlets. Frequency (Hertz) 60Hz (GFI6302) GFCI FUNCTION: Tests GFI Outlets and standard outlets that are wired in series with GFCI outlets (multiple outlets in kitchen or bath) RATED: 10 ft Drop and 250 lb Crush, CAT Rating III 300V, C-UL US, CE-Marking and recognized by Occupational Safety Hazards Association (OSHA) as an National Recognized Testing Laboratory (NRTL). 10 ft Drop and 250 lb Crush WARRANTY: Sperry Instruments Backed Limited Lifetime Warranty