Contact, Switch, Gate, NO, 100V AC/DC, 0.5A, 7.5W/VA, 0.2ohms, 3in Sensing Range, NEMA Rated, 1in W x 2.88in L x 0.50in D, Surface Mount, Aluminum Enclosure w/ ABS Plastic End Caps, 3ft SS Armored Cable & 4x Mtg Screws, 2500 Series