1. This product uses low-voltage DC 12V-24V to work, and must be connected to a switching power supply. It is prohibited to directly connect to 220V, otherwise the controller may be damaged. 2. The input port has polarity (positive and negative), and reverse connection is prohibited. The wiring operation should be performed in a power-off state. After the wiring is completed, the installation and lighting connection should be checked for correctness before powering on. If the DC voltage wiring or lighting installation is incorrect, a short circuit may occur, causing the controller to malfunction. 3. This product is only suitable for use in a dry indoor environment. Strong wind, high temperature or severe vibration may cause sensor failure. 4. The sensing angle is 120 degrees, the sensing distance is 1-3 meters, and the sensor is most sensitive when facing people 5. AB sensing heads should be arranged according to the site settings., Weight: 0.72973008722 pounds, Manufacturer: Kueohse