Product Product name: 32-channel stair sensor controllerVoltage: DC12V/DC24VPower: 400W MAXChannel: 32 (set to 1-32 step)Sensors: 2 Pir SensorNOTE: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 Vand 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.Product package:Only 1PCS LED controller(Not included the led strip and power supply) When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don't hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it!