Security + rolling code technology assures a new code is sent every time the keypad is used
Temporary password option enables friends or service people to enter the garage without giving them
Completely wireless - powered by one 9-volt battery (included), weatherproof flip-up protective cover
Works only on 315 MHz frequency and they must have a purple learn button on motor head
Backlit keypad makes numbers easy to see, even in the dark, one-button-to-close feature makes it easy
Compatible with 315 MHz lift master security+ garage door openers with a purple learn button under the light cover of the motor head and chamberlain radio control receivers only on 315 MHz