ALEKO ACC4 Accessory Kit for Aleko Gate Openers (Includes LM102, LM147, LM172 and LM169) Compatible with ALEKO gate opener models: AS/GG 450,650,900,1300, AC/AR 1300,1800,2200,2700,5700 Photocells keep your automatic gate opener from closing accidentally on a vehicle or a person Wireless keypad provides convenience and security. Restricts gate access to only residents or guests The LM107/108 Mounting Post is recommended for mounting the keypad