ALEKO LM171 Wireless Keypad for ALEKO Gate Openers Model AC1400 AR1450 AC2000 AR2050 Compatible with ALEKO brand swing and sliding gate openers AC1400, AR1450, AC2000, and AR2050; for other ALEKO brand gate openers see keypad LM172 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