Merlin Garage Door Opener 35 x 5 x 20mm Black & Green SKU: 282389 MODEL: C945 Error. try again later You've successfully joined the club $ 88 each Mitre 10 SAvailable at selected stores. Check your local store for details Variants Key ring garage door opener remote controls are small and convenient with the ability to operate up to three doors from the one unit. A must have for every set of keys in the house. Features and benefits Controls up to three Merlin Security+ garage door openers. Key ring included to attach to car keys. Battery included. Frequency: 433.92Mhz AM. Encryption: Security+.