Intelligent design, when people come, say goodbye to cumbersome button switches. installation, see the light but not the light, easy to clean, and make the space more stylish. Adjustable mode/brightness/delay time/speed Automatic control, saving energy. High sensitivity and strong practicability Product name:28 steps staircase controller Product Model:RL-STEP-04 Voltage:DC12V-24V Channel:28 channels Wattage:Less than 15W for each step Less than 420W for all steps Function:adjust mode/brightness/delay time/speed Power Suplly:2*AAA Battery(Not included batteries) Colour:White Material:plastic Package Contents: 1 * Controller 1 * Remote control(2*AAA Battery Not Included) 1 * Bracket 2 * Sensing Cable 2 * Extension Cable 1 * Power Cable 1 * Screwdriver 2 pairs * Screw Kit 2 pairs * Snap Fixing 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.