Overview:  The sticky  433MHz 86 type wall panel wireless RF Remote control transmitter can support all SONOFF products with 433Mhz RF function. After successfully learning codes with 433MHz RF Remote, the push button wall switch can be turned on/off indoors. It can make your life smarter and more convenient.    Features:   - It can replace remote controller to control all SONOFF products with 433Mhz RF remote control function, such as Tx Serial(with receiver), Slampher, Sonoff RF, Sonoff 4CH Pro.  - Mechanical Life 100,000 times of operation. Excellent quality with long lifespan. Upgrade your home to an elegant smart home, control anywhere, anytime.  - You can stick or screw it to your original 86 box on the wall or near staircase, bedside or doorway.   - Attached with alkaline battery inside, provide with stable and powerful power supply.  - With dual adhesive tape, can be installed anywhere you like. Easy installation and use.     Specifications:   Channel: 1CH / 2CH / 3CH;  Encode: EV1527;  Frequency: 433.92;  Remote Control Distance:0-100m;  Use Application: Staircase / Bedside / Doorway, etc.;  Power Supply: 1*L828 12V 27A battery (not included);  Current: 20~25mA;  Product Size: Approx. 86* 86 * 32 (mm);  Product Weight: Approx. 100g;     Package included:  1 x 433Mhz RF Remote Controller(battery not included),  2 x Dual Adhesive Tape.