Specifications: 1) Distance: 50-150 meters 2) Mini size: 5.5cm x 4.5cm x 1.0cm 3) One receiver can work with 400 codes 4) No interference with other remotes and receivers 5) Selector: With 8 dip switches, users can make different combinations for different remotes Power Input Selector: This receiver can work at AC/DC 9V~30V. Change the PIS according to the power input. If the input is greater than 24V, short pin 2; short 1&2 if input is less than 24V. Color: White + Black Material: ABS Programming a new remote: 1) Select the correct brand for the remote to be programmed by moving dip switches UP or DOWN. For example, for 433.92MHz remote controls, move Dip-switch 7 UP. 2) Press the learn button. The LED will turn on. 3) Press the button on the remote. The LED flashes 4 times, indicating successful programming. 4) Repeat for another button. 5) The second channel programming procedure is the same. Erase all data from memory: Press and hold the learn button. The LED will start flashing. Keep the button pressed until the LED turns off. All saved data will be erased permanently. Compatibility: All 433.92MHz fixed code remotes Package Contents: 1 x Receiver 3 x Remote Control Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual product. Measurement error allowed is +/- 1-3cm.