This dual beam photoelectric sensor combines advanced functionality with a sleek, compact, and weather-resistant design—ideal for both indoor and outdoor security applications. Twin synchronized pulsed beams offer enhanced accuracy, stability, and resistance to false alarms. The built-in optical viewfinder allows for precise alignment, while the integrated surge protection circuit guards against lightning-related damage. Perfect for securing schools, office buildings, hospitals, residential yards, and more. | Spt | | Wired Indoor/Outdoor Photoelectric Dual Beam Motion Sensor up to 550 ft. (Indoor) /180 ft. (Outdoor) | Best Buy