INSTALLATION: adaptor supply power to the sensor, controller and then every led light. Install the led liht accordingly to the order of the steps. such as, first step light connect to Number "1", second step light connect to Number "2" and so on. At last, put the sensor to the place where the people can be sense easily. One sensor at the bottom of stair and another sensor at the top of the stairs. PIR motion sensor led controller for smart staircase step way strip lighting automatic LED stair light controller 20 strip Phone Control LED Stair Lighting For Smart Staircase Step Way Automatic 350W 30 Steps Stair LED Controller 350W Flowing Auto Lighting Effect Name:Phone control led stair lighting controller Light mode:6 different lighting modes ( flow, follow, bright, auto light up, Interval, cyclic) Power:350W max Input:DC12V-DC24V Output:DC12-DC24V Steps control:30 steps at most Other features:Horse racing light beside the steps Notes: 1. When connect led light to controller, please install in correct order. 2. The controller can be installed in the invisable place.But make sure better lighting effect, please put the sensors at the place where the sensor can sense people easily. Suggest the access of stair stars. 3. Please make sure the led lights are connected in correct , Red cable is positive and blue cable is negetive. 4. It can not work with High voltage directly.Please use adaptor of DC12-DC24v to help for the connection, 5. Suggest install the cables inside before decoration, then only led light need to be added . 6. Please put one sensor in each end of the stair, one top, one bottom. Colour:Black Material:Plastic+Metal Package Contents: 1 * Stair Light Controller 2 * sensing 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.