High Quality infrared Sensor PMF50R Non-sphere optical lens totally eliminate stray light and overcome the interference from such light sources as sunlight; indicator ,makes installation easy ; LIGHT ON/DARK ON options; Protection grade IP65(IEC); The implementation of product standards: Able to detect working status by red LED is Chinese Standard:GB/T 14048.10-2008; IEC:IEC 60947-5-2:2004.