1. the key quickly to adjust the speed of the light strip. There are four gears (60 seconds, 45 seconds, , 15 seconds) 2. and hold the key for 5-6 seconds to enter setting mode. Long the switch once to set the first step stairs, Short the switch a second time to set the second step stairs, Short the third time to set the third step stairs, and so on. 3. After the operation is completed, and hold again for 5-6 seconds to automatically save the corresponding settings. Product name: 32-channel stair sensor Voltage: DC12V/DC24V Power: 350w Channel: 32 (set to 1-32 step) Sensors: 2 Pir Sensor NOTE: This controller does not have the function of lighting on both sides of the stairs. 1-A/B sensors need to be installed at the entrance and exit of the stairs and face the human body. 2- The product is low voltage 12V-24V, need to connect transformer. Do not directly connect 220V, it burn the controller. 3- The product is not waterproof. Important note: The positive and negative terminals of the power supply input of the controller cannot be reversed, the red wire V+ is connected to the positive electrode of the switching power supply, and the blue (or black wire) V- is connected to the negative electrode of the switching power supply. 24V cool white light belt: 1 x 5m 24V cool white light strip. cable: random color, don't accept the specified color Colour:White Material:plastic Size:about 185 x 78mm Package Contents: 1 x Controller 2 x Induction head Only the above package content, other products are not included. Note: Light reflection 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.