1. Type of programming: Programming with the receiver 2. Number of channels: 4 3. Code: rolling code 4. Frequency: 433.92MHz 5. Woring Range: 10-50 m (open space)<br><br>Comaptible with: S449 QZ1 S449 QZ2 S449 QZ3 S449 QZ4 TXQ449100 TXQ449200 TXQ449300 TXQ449400 Remote come with Battery !!! Security of use: dynamic code provides a high level of security, non-copyable code. Disclaimer:Your Old remote must be same as the advertisement, remote do not compatible with other remotes. Programming transmitters to receiver The remote control is the same function as your old remote. it should programming with for-original receiver according to your for-original Manual when you . 1. Locate the Learn / Code Set button on the motor. This is usually under the lamp cover, or on the back of the motor. 2. the Learn / Code Set button once, then let go. A light should illuminate. 3. the desired transmitter button once, and the light go out. 4. the remote again the the light flash on the motor and then go out, signifying the remote has been coded. 5. Test the operation of the remote. Colour:As Shown Material:Plastic<br><br>Package Contents: 2 * Remote Control<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.