1. Type of programming: Programming with the receiver 2. Number of channels: 2 3. Code: rolling code 4. Frequency: 433MHz Compatible Models Suitable for all DOORHAN models ! For example: DOORHAN TRANSMITTER 2 DOORHAN TRANSMITTER 4 DOORHAN TRANSMITTER -2 PRO DOORHAN TRANSMITTER -4 PRO DOORHAN Premium RC black 4 1. Press and release the button R on the receiver. 2. The left side of display panel will show 0 then disappears immediately. 3. Press any button twice, coding is completed. 4. Press the transmitter button to test operation. Colour:black Material:plastic Note: To remove a single transmitter's code or all transmitter codes from the receiver memory Note: Please check as much as possible to make sure the item is what you need. The actual product may have slight color difference or difference, which will not affect the use Package Contents: 1 * Gate Remote Control