ALEKO LM172 Wireless Keypad for ALEKO Brand Gate Openers Compatible with all ALEKO brand swing and sliding gate openers except AC1400, AR1450, AC2000, and AR2050 Restricts gate access to only those you want to be able to get in, like residents or invited guests Quick and easy to program, and provides a high level of security Pair with ALEKOs LM107 or LM108 mounting post, sold separately, to make the keypad convenient and accessible Frequency: 433.92 MHz; Powered by (3) AAA batteries, sold separately