Specifications: 1) Distance: 50-150 meters. 2) Very small size: 5.5cm x 4.5cm x 1.0cm. 3) One receiver can work with 400 codes. 4) It does not interfere with other remote controls and receivers. 5) Selector: With 8 DIP switches, the user can create different combinations for different remote controls. Input selector: This receiver can work at AC/DC 9V~30V. However, it is better to change the PIS according to the input. If the input is greater than 24V, short circuit pins 2&3; short circuit 1&2 if the input is less than 24V. Color: white + black Material: ABS Programming a new remote control 1) Select the correct brand of the remote control to be programmed by moving the DIP switches UP or DOWN. For example, 433.92Mhz Marantec remote controls, just move DIP switch 7 UP. 2) Press the learning button. The LED light will turn on. 3) Press the button on the remote control, the LED light will flash 4 times. This means that the remote control was successfully programmed. 4) Repeat step 2 for another button. 5) The second channel programming procedure is the same. Delete all data from the memory card: Press and hold one of the learning buttons. The LED light will start flashing. Keep the button pressed until the LED light goes out. All data saved on the memory card is permanently deleted and cannot be recovered Compatible: All 433.92mhz fixed code remote controls. Package contents: 1 x Receiver 3 x Remote control 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 to differ slightly from the real thing. The allowed measurement error is +/- 1-3cm.[CO]