Model 3083 2-button keychain remote control operates garage doors and gates equipped with Multicode 10 Dip Switch systems at 300 MHz frequency. The compact design (2.5" × 1.5") fits easily on a keychain or in a purse. Two sets of 10 Dip Switches with two buttons allow operation of up to two separate Multicode-compatible doors or gates. Includes Velcro strip for mounting. To verify compatibility: Check that your existing remote or garage door opener displays 300 MHz frequency and has 10 Dip Switches.