Specifications: 1) Distance: 50-150 meters. 2) Ultra-mini size: 5.5 cm x 4.5 cm x 1.0 cm. 3) One receiver can handle 400 codes. 4) Will not interfere with other remote controls and receivers. 5) Selector: Equipped with 8 DIP switches, allowing users to set different combinations for different remote controls. Input selector: This receiver can use 9V~30V AC/DC power. However, it is best to change the input voltage according to the input voltage. If the input voltage is higher than 24V, short circuit pins 2 and 3. If the input voltage is lower than 24V, short circuit pins 1 and 2. Color: White + Black Material: ABS Product Name: RX-MULTI Operating frequency: 300-868MHz Operating voltage: DC9-30V Load power: 2500W Static current: 10mA Product weight: 68.5g Operating mode: Jog, Self-locking, Interlock Receiver sensitivity: 110dB Programming a new remote control 1) Select the remote control brand to be programmed by turning the DIP switch up or down. For example, for a 433.92MHz Marantec remote control, simply turn DIP switch 7 up. 2) Press the learning button. The LED indicator will light up. 3) Press any button on the remote control; the LED indicator will flash 4 times. This indicates that the remote control has been successfully programmed. 4) Repeat step 2 for the second button. 5) The programming steps for the second channel are the same. Delete all data on the memory card: Press and hold any learning button. The LED indicator will flash. Press and hold the button until the LED indicator turns off. All data saved on the memory card will be permanently deleted and cannot be recovered. Compatibility: All 433.92MHz fixed code remote controls. Package contents: 1 x Receiver 3 x Remote controls Only the above package content is included; 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 actual item. The measurement tolerance is +/- 1-3 cm.