Fangrui Product Details New Products: Intelligent Stair Light Controller With Motion Sensor Design: 2 In 1 ( 24v 400w Power Supply + Stair Light Controller Integration), Installation Is More Convenient. Input Voltage: 175v-265v Ac ( 220v,230v Is Working, 110v Is Not Working) Output: Dc 24v Max Power: 400w Sensor A: Used For Upstairs Sensor B: Used For Downstairs Function: 1. Timer Delay Off (2s,10s,20s,40s,60s,80s Auto-delay-off Adjustable) 2. Brightness Speed Is Adjustable 3. Pixel Number Is Adjustable, Max. Up To 1024 Pixels. Strip Length Max. Up To 42 Meters. Note: For Water Flow Led Strip Colour:as Shown Material:iron Package Contents: 1x Stair Light Controller 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.