Chamberlain/LiftMaster 300MC Gate and Garage Door Opener Remote - Compatible Replacement for MultiCode 3089. Features This garage door opener transmitter is a compatible replacement for the MultiCode 3089, 1089, 3083, 4120, 3070 and 3060 remotes. It is also compatible with Digi-Code DC5010 and DC5040 transmitters. The LiftMaster 300MC is designed to use with 300 MHz receivers, such as the MultiCode 1090, 1099, 3021 and 3028, and the Tricode TCG1, TCG2, TCR1 and TCR2 gate or garage door opener receivers. Specifications Power: 12V Battery (included) Frequency: 300 MHz Programming: 10 Dip Switch Dimensions: 3.75"" X 1.5"" X 0.75