Voltage:DC12V/DC24V Power:500W MAX Channel:32 (set to 1-32 step) Sensors:2 Pir Sensor Product name:32-channel stair sensor controller NOTE: 1 - A/B sensors need to be installed at the entrance and exit of the stairs and face the human body. 2 - The product is low voltage 12V-24V, need to connect transformer. Do not directly connect 220V, it will burn the controller. 3 - The product is not waterproof. Important note: The positive and negative terminals of the power supply input of the controller cannot be reversed, the red wire V+ is connected to the positive electrode of the switching power supply, and the blue (or black wire) V- is connected to the negative electrode of the switching power supply. Colour:Black Material:Plastic+Metal Package Contents: 1 * LED controller Kit(Not included the led strip and power supply) 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.