suitable for 3000m for DC 12V 24V Controller RF Wireless Remote Control System 315/433MHz-CHENG DU SI XI Features: This product is typically applied to the multi-channel electric doors and for windows, ordinary electronic lock, switch, electric garage door, window, hoisting equipment ,industrial automation and control, all kinds of anti-theft alarm ,security and other fields .The remote controller supports the use of forming a complete set of wireless intelligent remote control system .It has a wide range of uses. There is a learning button on the control panel of for touch switch, the button is used to learn and remove the code.Press and hold the learning button for three seconds.When the indicator light flashes,we enter the learning state. Press any for key on the remote controller to emit signal, the light flashes two times and off .It means you learn it successfully. Delete remote control method: hold down the learning button for about 8 seconds, the indicator light turns on to off, then the code you learned before will be delete. Press the controller learn code button once, then the LED indicator flashes once and then turns off, then press any button on the remote control, the controller LED indicator flashes three times in a row and then turns off, indicating that the code pairing is successful. Press the controller learn code button twice, the LED indicator flashes twice and then turns off, then press any button on the remote control, the controller LED indicator flashes three times and then turns off, indicating that the code pairing is successful. All buttons on the remote control are in self-locking mode. Package Includes: 1Set RF Wireless Remote Control Switch System Specifications: Material:ABS,Metal Working voltage: DC12V Working frequency: 315-433MHZ Transmitting distance: 3000M Encoding type: fixed code, learning code Receiver Size:Approx.94.7x61.8x28.2mm/3.73x2.43x1.11in Remote ControlSize:Approx.135x42mm/5.31x1.65in Net Weight:178g note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please pay attention to the title and description when buying, and pay attention to the title and description when buying.