Specifications: 1) Distance: 50-150 meters. 2) Very mini 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) Brand selector: With 8 dip switches, the user can make different combinations for different remote controls. Power Input Selector: This receiver can work at AC/DC 9V~30V. However, it is better to change the PIS according to the current input. If the input is greater than 24V, short pin 2 short 12 if the input is less than 24V. Color: white + black Material: ABS Programming a new remote control 1) Select the correct brand of remote control to be programmed by moving the dip switches UP or DOWN. For example 433.92Mhz remote control, just move Dip-switch 7 UP. 2) Press the learn button. The LED will turn on. 3) Press the button on the remote control, the LED will flash 4 times. It means that the remote control has been successfully programmed. 4) Repeat for another button. 5) The programming procedure for the 2nd channel is the same. Delete all data from the memory card: Press and hold one of the learn buttons. The LED will start flashing. Hold this button until the LED goes out. All data stored on the memory card will be permanently deleted and cannot be recovered Compatible: All 433.92mhz fixed code remotes. Package Contents: 1 x receiver 3 x remote control Only the above package contents, other products are not included. Note: Light reflection and different monitors may cause the color of the item in the picture to be slightly different from the real thing. The permissible measurement error is +/- 1-3 cm.