Features： 1. 3W high-power infrared LED. 2. Onboard photoresistor, the ambient light detector. 3. Onboard adjustable resistor, for controlling the ambient light threshold of toggling the infrared LED. 4. Allows adding night vision function to RPi Camera (E) or RPi Camera (F). How to use: 1. Connect the Infrared LED Board to the camera PCB with screws.(The screw holes are used for both attachment and power supply) 2. Adjust the adjustable resistor to set a proper ambient light threshold, which toggles the infrared LED automatically. 3. When ambient light is lower than threshold value, the infrared LED is on, vice versa. Package included: 2 x Infrared Light Sensor Module Screw sets Note: 1. The resistance is not adjusted, so the infrared light will automatically turn on when connected. If no adjustment is made, the LED light will always be on, which will easily cause heat. It is recommended to stick a heat sink for long-term use. 2. Due to the power of the raspberry pi, the effect is better when shooting objects within 1 meter to 2 meters. 3. This infrared light is 1W power. When the Raspberry Pi is connected to a 5V 2A power supply and the external device has a mouse and keyboard, then connect the camera and two 1W infrared lights. The Raspberry Pi and the camera can work normally. However, when it is used for a long time, the power chip of the Raspberry Pi and the two 1W infrared lamps will have different degrees of heat, so pay attention to the heat dissipation during use (can be connected to a heat sink), and the additional increase of the entire Raspberry Pi board Device power consumption. 1W high-power infrared lamp with onboard adjustable resistor and photoresistor can automatically be turned on according to ambient light. Adjustable resistance, you can use a small screwdriver to gently twist it to adjust the ambient brightness level that will trigger the 1W infrared light to work. The infrared light sensor module can be mounted on the camera module with screws. The working mode of the infrared light sensor module is that when the ambient light is dark, the infrared light will automatically start working, When the ambient light is strong, the infrared light will automatically turn off. Provided that the resistance of the light board needs to be set. Ideal imaging distance is within 3m. The effect is better when shooting objects within 1 meter to 2 meters.