Gate sensor /a pair of Fence Alarm Photoelectric 4 beams 20m range/ infrared photobeam curtain/barrier sensor

MD-448RDMT 433MHz Curtain PIR Detector Pet Immune, Pet Motion Sensor for Curtain/Window, Free Shipping

Waterproof Lens Indicator Photoelectric IR Two Beams Detector Outdoor Sensor Infrared Barrier Detector IR Photocells

12-24V DC/AC Unilateral Wiring Reflective Photocell Sensor Single Beam for Gate Openers Access Control Security Alarm Systems

Four Beams Perimeter active Infrared Laser With 70CM Height 5M Detector Distance Curtain Window Door Balcony Barrier Sensors

Wired Motion Detector Outdoor Beam Infrared Sensor PIR Detectors For Home Burglar Security Alarm System

1xMini Wireless Motion GSM Alert Detection Monitor Infrared Sensor PIR MP Alarm A9