Security+2.0 and Security+ rolling code technologyassures a new code is sent every time the keypad is used and virtually eliminates interference
	
Temporary password optionenables visitors or delivery and service personnel to enter the garage without giving them your personal code
	
Completely wireless – powered by one 9-volt battery (included) -- Weatherproof flip-up protective cover
	
Backlit keypadmakes numbers easy to see, even in the dark --- Compatible with all LiftMaster garage door openers manufactured since January 1993