1.The controller has two human-sensing device interfaces, which are marked with Sensor Connection 2.The right side of the marked Sensor Connection is where the product is connected to the power supply. It has two power supplies with positive poles and two power supplies with negative poles. When you connect, you must connect either of the positive and negative poles at the same time to make the device work normally. 3. are the ports of the Arabic numerals 1-36. They refer to the number of your steps. If your number of steps is only 10, then you only need to connect the 10 ports 1-10. Just adjust the data of the device (there will be adjustment instructions ). If you have 15 steps, then connect the light bar to the -15. By analogy, if there is 36, then you can perfectly connect to ports 1-36. If you have more than 36 steps. You need to purchase a second device to complete your renovation. 4.The light bar connected to the place marked "Connect the addressable " is the water light bar of the staircase. It has two ports, "OUT1" and "OUT2" respectively have 3 connection ports, and "DO" is connected to the pixel dot Signal line. "GND" is connected to the negative wire of one outlet of the signal wire. A total of two ports can be connected to a 12V 2811 light bar with a pixel point of 40 meters (100 pixels per 5 meters of light bar). 5. The four red buttons on the device, "-" "+" "MODE" "SET". They are to adjust the number of steps controlled by the equipment, the lighting and extinguishing speed of the light bar, the color selection of the light bar on the side of the stairs, the length and speed of the flowing water. These four buttons are required to cooperate to complete. Occasion: living room Item Type: Strip ED Chip Model: SMD2812 Item Type: RGB Controler Voltage: 12V Power Sour: AC Applicable Lights: 5050 2835 colour:Black Material:plastic Package Contents: 1 x 36 channel LED Controller 2 x Motion Sensors Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.