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) Does not interfere with other remotes and receivers. 5) Selector: Features 8 dip switches, allowing users to create different combinations for different remotes. Power Input Selector: Receiver operates at AC/DC 9V–30V. Adjust the PIS according to the power input. Short pin 2 if input is above 24V; short pins 1 and 2 if input is below 24V. Color: White + Black Material: ABS Programming a new remote: 1) Select the correct code 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 additional buttons. 5) The second channel programming procedure is identical. Erase all data from memory: Press and hold the learn button. The LED will start flashing. Continue holding until the LED turns off. All stored data will be permanently erased. Compatibility: All 433.92MHz fixed code remotes. Package Contents: 1 x Receiver 3 x Remote Control Note: Light reflection and display differences may cause slight color variations between the image and the actual item. Measurement error allowance: +/- 1-3cm.