Key benefits Reliable detection with fewer false alarms: lenstype optical element strengthens the infrared beam for stable sensing and better immunity to environmental triggers such as rain, snow, and fog. Lowmaintenance operation: builtin lowbattery reminders on both transmitter and receiver ensure timely battery replacement so the system stays functional. Flexible, compact installation: IP55rated housing and small size let you mount the units indoors or outdoors without affecting normal equipment operation. Main features sensitivity: Lenstype optical element increases beam intensity and detection consistency for reliable performance in varied conditions. Falsealarm resistance: Design minimizes nuisance triggers from weather (rain, snow, fog), improving security and automation reliability. Low battery reminder: Transmitter red LED flashes when battery is low; receiver buzzer emits a beep every second to prompt battery replacement. Invisible infrared beam: Provides nonvisible IR sensing for automation and security without affecting appearance or operation of doors and gates. Weather protection and mounting: IP55 rating allows indoor or outdoor installation; compact footprint and simple mounting keep installation quick and unobtrusive. Wide compatibility: Suited for typical door and gate control systems — sliding doors, swinging doors, garage door openers, perimeter fencing, and general security detection setups. Typical applications (practical examples) Automated entry control: Mount across a doorway track for sliding or swinging doors to detect people or objects and prevent door closing on obstructions. Garage and vehicle gates: Install pairwise across garage door or driveway gates to stop closures when a vehicle or person is in the path. Perimeter security and outdoor fencing: Use multiple beam pairs along a fence line or property boundary to detect intrusion attempts without visible hardware. What you get A compact, IP55rated infrared beam sensor pair that delivers strong beam intensity, weatherresistant operation, visible lowbattery alerts, and straightforward installation for automation and security uses.