Long to set 1 indicator light flashes red, then to set 1 to adjust the speed from 1-5 (speed 1 is the slowest, speed 5 is the fastest) Long to set 1 indicator light flashes red light to stop flashing red light, adjustable 1-5 delays ( delay +10 seconds, the first delay is 10 seconds, the second delay is 20 seconds) Long to set 2 the indicator light flashes red, then to set 1 to set the number of stair steps ( to set 1 to increase the number of steps, and to set 2 to decrease the number of steps) When the light is on, Set 2 to adjust the brightness from 1-5 levels (1 level is the darkest and 5 levels are the brightest) Notes: 1. When the lamp is plugged into the controller, find the socket corresponding to the serial number 2. The sensing distance between the sensor and the light-emitting board is about 2 meters, and it needs to be aligned and installed on the same horizontal line, otherwise it cannot be sensed 3. Be sure to connect the positive and negative poles, red positive and black negative. Low voltage connects to 12-24V, not to AC 220V. 4. You can reserve the wire slot position for wiring first, and connect the positive and negative poles of the sensor and the light wire accordingly 5. Sensors: one at the head of the stairs and one at of the stairs Due to different product batches, the appearance , which does not affect the use. Colour:As Shown Material:Plastic Package Contents: 1 * Light Strip Stair 32 Channel Controller Kit 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.