SENSOR WITH RELAY TYPE; 1.7 INCH W X 1.55 INCH D X 2.6 INCH H SIZE; GRAY FINISH; UL (CANADA AND US) APPROVAL; 120/230/277 VAC AT 50/60 HZ VOLTAGE RATING; WALL MOUNTING; 0 TO 800 W AT 120 VAC (BALLAST/TUNGSTEN), 0 TO 1200 W AT 277 VAC (BALLAST), 1/6 HP AT