China pcb manufacturer for automatic ICR function: It is the camera that automatically switches the setting according to the light environment to remove the IR cut filter to obtain increased camera sensitivity characteristics. In dim light intensity, the IR cut-off filter is automatically removed (IR ON), infrared sensitivity is increased, and a clear image can be obtained with an infrared lamp. In the case of sufficient light, the IR cut-off filter is automatically added (ICR OFF) to obtain a clear image with true color. The automatic switching of the ICR relies on changes in ambient brightness to enable the camera to work effectively during the day and night.