Built with stable DC12V 24V power input and leak proof design using ABS, ensuring long lasting operations for PIR sensors step lights in various environments The controller includes intuitive function buttons for easy of modes, delay time, brightness and speed, allowing quick customization of stair lighting preferences Features 9 adjustable speed option and 4 brightness levels ( 25%, 50%, 75%,%) for adjustable illuminations, creating perfect ambiances from soft glowing to bright light for different needs The LED stair light controller detects movement within 1.5 2 meters ranges at both top and bottom of stairs, ensuring seamless automatic lighting for enhanced convenience and for home or commercial spaces Comes with all necessary components including 5m extension cable, 1m sensors wire, mounting brackets, screws and user manual, supporting both recessed and surfaces mounting for LED step lights