Features: 1*Button slide cover to protect buttons avoid accidental unplanned operation. 2*You can still keep and use your factory remotes as well as the additional one if your remotes allow multiple remote control encoding. 3*4 buttons to operate 4 different garage doors electronic rolling gates or retractable doors. 4*Codes into your garage door in less than 30 seconds. 5*Work with other Sonoff RF 433Mhz controlled devices such as smart wall light switch and wireless smart switch module. 6*Latest modern design and technology which is equal to a simply smarter and unique remote. 7*Codes into your garage door in less than 30 seconds.Handy key chain size attaches to your car keys no more unwanted bulkiness. 8*4 buttons to operate 4 different garage doors electronic rolling gates or retractable doors with RF 433MHz.Work with other Sonoff RF 433Mhz controlled devices such as Sonoff RF Sonoff 4CH Pro Sonoff T1 UK 1CH/2CH/3CH Sonoff RF Bridge 433 etc. 9The latest modern design and technology is equivalent to a simple smart and unique remote control. 10Button slider protects the button from accidental unplanned operations. 4 buttons for 4 different garage doors electronic rolling doors or RF 433MHz retractable doors. 11If your remote allows multiple remote codes you can still keep and use the factory remote and the attached remote. 12Put the code into the garage door in less than 30 seconds. Convenient keychain size attached to your car key no longer has extra bulkiness. 13Used with other Sonoff RF 433Mhz control devices such as Sonoff RF Sonoff 4CH Pro Sonoff T1 UK 1CH / 2CH / 3CH Sonoff RF Bridge 433 etc. 14Latest modern design and technology which is equal to a simply smarter and unique remote.Button slide cover to protect buttons avoid accidental unplanned operation. 15You can still keep and use your factory remotes as well as the additional one if your remotes allow multiple remote control encoding. Specification: Package List: 1 * Sonoff RF Remote Controller