sonoff rf รีโมทควบคุม itead 433 mhz ไร้สายสําหรับประตู 4 ปุ่ม

Features: *Latest modern design and technology, which is equal to a simply smarter and unique remote. *Button slide cover to protect buttons avoid accidental unplanned operation. *You can still keep and use your original factory remotes as well as the additional one, if your original remotes allow multiple remote control encoding. *Codes into your garage door in less than 30 seconds. *Handy key chain size attaches to your car keys no more unwanted bulkiness. *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. Specifications: Operating frequency: 433MHz Encoding: fixed code (1527 Chip) Power supply: 1* 12V 27A Batteries (included) Efficient distance: 20M (in open area) Material: Metal + Plastic Button: 4 Panel: slide cover Size: 5.5*3 *1.8cm Package Information: Package Size: Approx. 9.3*6.1*2cm/3.66*2.4*0.79in Package Weight: Approx. 31g/1.09oz  Packing List: 1 * Sonoff RF Remote Controller