Feature: 1. STAIR LIGHT CONTROLLER: Press and hold for 3 seconds to set the number of stair lights, bright blue color means the serial number light is on. Click the button until all lights are on, up to 32 stair lights can be controlled, press and hold again to confirm. 2. 4 SPEED LEVEL ADJUSTABLE: Touch the button to adjust the speed at which the lights go out on the controller. The higher the four levels, the slower the lights turn on and off. 3. PERFECT LIGHT CONTROLLER: Perfect home stair light controller, fully automatic, automatically turns on the light when it senses someone walking and turns off the light when someone leaves. 4. SAFE TO USE: LED stair light controller kit adopts DC12V 24V low voltage input, with anti‑leakage system, stable output, safer and more reliable to use. 5. STABLE PERFORMANCE: The light controller kit is made of premium flame retardant ABS, stable output and sensitive sensing. Suitable for home, shopping center, store, etc. Specification: Item Type: Motion Sensor LED Stair Light Controller Material: ABS Weight: Approx. 330g/11.6oz Motherboard Size: Length: Approx. 18cm/7.1in Width: Approx. 8cm/3.1in Cord Length: Approx. 5m/16.4ft (2 Bundles) Ports: 32 Groups Sensing Port: A B. Package List: 1 x Serial Number Sticker1 x Instruction Manual1 x Main Module1 x Screwdriver1 x Red Wire1 x Blue Wire2 x Sensor Head2 x Wire Bundle Note: Manual measurement please allow some error.