300MC garage door opener remote control compatible with MultiCode 3089, 1089, 3083, 4120, 3070, and 3060 remotes. Also works with Digi-Code DC5010 and DC5040 transmitters. Designed for 300 MHz receivers including MultiCode 1090, 1099, 3021, and 3028, and Tricode TCG1, TCG2, TCR1, and TCR2 gate and garage door opener receivers. Specifications: 12V battery included, 300 MHz frequency, 10 dip switch programming, 3.75" × 1.5" × 0.75" dimensions. Originally supplied with Chamberlain 300MC, DigiCode DC5010, DigiCode DC5040, LiftMaster 300MC, Tricode TCG1, TCG2, TCR1, and TCR2 models.