The PIR + Photocell sensor is highly advanced and reliable, capable of detecting motion and changes in light levels. It has a wide detecting angle of 140 degrees and a detecting distance of up to 5 meters. With over 80,000 hours of service time, it offers prolonged and consistent performance. It is suitable for security systems, home automation, and energy management. The sensor operates by detecting infrared radiation from moving objects and assessing ambient light conditions, minimizing false alarms. It is easy to install and has a sleek design, making it suitable for both residential and commercial use. Overall, the PIR + Photocell is a top-notch sensor that guarantees accurate detection and is valuable for any professional or personal application.