FLUKE 1621 EARTH GROUND TESTER * 3-pole Fall-of-Potential earth testing for basic measurements * 2-pole resistance measurements for added versatility * Easily capture values with single-button operation * Ensure accurate measurements with automatic ‘noise’ voltage detection * Hazardous voltage warning offers increased user protection * Clearly read and record data with a large, backlit display * Rugged holster and design for tough work environments * Portable size allows for easy transportation * Instantly be alerted to measurements outside of your set limit, when you use the adjustable limit setting * 600 V Cat II