Compatible with all Linear-MegaCode systems, including LDO33, LDO50, LSO50 and LC075 series openers.;318 MHz frequency.;Smart Button coding - no dip switches.;Dimensions 2 1/4 x 1 1/4 x 1/2 inch.;Battery, snap-action keychain, and instructions included.

• LINEAR MegaCode Garage Door Openers ACT-21 One Button Mini Remote

LINEAR MegaCode Garage Door Openers ACT-21 One Button Mini RemoteLINEAR