[Product Name] DC Remote Control Switch[Operating Frequency] 433MHz[Model] GLK-DC-X1[Operating Voltage] DC12V-72V[Color] Black[Quantity] 1 set[Relay] 40A[Dimensions] 54*84*28mm[Operating Mode] Manual, Self-Lock, InterlockSelf-Lock Mode: Power on the controller, press and hold the Learn button for 3 seconds. The indicator light will flash once. Release the button and press a button on the remote control. The indicator light will flash 3 times, indicating successful pairing.Interlock Mode: Power on the controller, press and hold the Learn button for 5 seconds. The indicator light will flash twice. Release the button and press the remote control's Power button. The indicator light will flash 3 times and then return to the on state. Then press the remote control's key. The indicator light will flash 2 times, indicating successful pairing. Clearing the Code: Plug in the controller, press and hold the Learn button for 8 seconds, and the indicator light will flash 4 times, indicating successful clearing.Manual Switch: The Learn button on the controller turns the output on and off. Press once for on, press again for off.Note: 1. Due to different monitors and lighting effects, actual colors may vary slightly from the image.2. Due to manual measurement, please allow 1-3 cm deviation.