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 for creating different combinations for various remotes. Power Input Selector: Receiver operates on 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) Set the correct dip switch configuration for the remote to be programmed. 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 follows the same programming procedure. 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. Compatible with 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.