Convenient keyless access to the garage. Accessible with a 4-number PIN. Customers can upgrade their system or replace existing. Works with all Chamberlain openers with Safety Sensors from 1993 to present. Wireless design can be installed and programmed in minutes. Single button closure simplifies a secure exit. Temporary PIN can be programmed for deliveries and guests. Keypad lights up to allow for easy use, day or night. Battery and weather cover are included.