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) Selector: With 8 dip switches, the user can make different combinations Compatible with different remote controls. Input Selector: This receiver can work with 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 pin 2 and 3; short circuit 1 and 2 if the input is less than 24V. Color: White + Black Material: ABS Program a new remote control 1) Select the correct brand for 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 will light up. 3) Press the button on the remote control, the LED flashes four times. This means the remote control is programmed. 4) Repeat step 2 Compatible with another button. 5) The programming procedure Compatible with the second channel is the same. Erase all data from the memory card: Press and hold either learning button. The LED flashes. Press and hold the button until the LED turns off. All data stored on the memory card is permanently deleted and cannot be recovered. Compatible with: All 433.92MHz fixed code remote controls. Compatible with package contents: 1 x Receiver 3 x Remote Control Only the above Compatible with package contents, other products are not included. Note: Light reflection and different displays may cause the color of the product in the picture to differ slightly from the actual item. The allowed measurement error is +/- 1-3 cm.