ALEKO LM173 Wireless Push Button Remote Control Transmitter for ALEKO Gate Openers Compatible with all ALEKO brand swing and sliding gate openers except AC1400, AR1450, AC2000, and AR2050 Clips on to your cars sun visor for the ultimate in convenience, or use it at home for when company comes by Quick and easy to program, and provides a high level of security Working distance: 50 Feet Frequency: 433.92 MHz