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3.6V Battery Supported Outdoor IR Sensor Photocell Automatic Gate Garage Door Infrared Beam Sensor
Aliexpress UK
1 pcs : 2167 - Adafruit Accessories IR Break Beam Sensors with Premium Wire Header Ends - 3mm LEDs.
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infrared beam Sensor Photocell Garage Door Infrared Sensor 12V-24V AC/DC For Sliding Gate Ir Barrier
Aliexpress UK
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DC12-24V Infrared Sensor Kit for Gate Opener Outdoor Photocell IR Beam Safety Sensors Detector for
Aliexpress UK
1 pcs : 2168 - Adafruit Accessories IR Break Beam Sensor with Premium Wire Header Ends - 5mm LEDs.
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2 beams IR fence infrared sensor distance 30M wiring Infrared Barrier detector gate photocell sensor
Aliexpress UK
10 pcs : 2167 - Adafruit Accessories IR Break Beam Sensors with Premium Wire Header Ends - 3mm LEDs.
eBay
Beam IR Sensor Standalone Wireless Home Security Alarm System Kit Flash Siren Horn WIth Motion
Aliexpress UK
Infrared (IR) break-beam sensors are a simple way to detect motion. If you do not, connect a 10K resistor between the white wire of the receiver and the red wire. This is the3mm IR version. It works up to 25cm / 10".
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Waterproof Perimeter Trip Alarm Dual Beam Sensor Active Infrared Intrusion Detector IR 20m~150m
Aliexpress UK
Infrared (IR) break-beam sensors are a simple way to detect motion. This is the 5mm IR version. It works up to 50cm / 20". If you do not, connect a 10K resistor between the white wire of the receiver and the red wire.
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Outdoor Waterproof wired 30m Gate IR Photocell Beam Sensor For Automatic Gate Opener
Aliexpress UK
Infrared (IR) break-beam sensors are a simple way to detect motion. This is the 3mm IR version. It works up to 25cm / 10". If you do not, connect a 10K resistor between the white wire of the receiver and the red wire.
eBay
Invisible Beam Barrier Active Detection Digital Pulse Infrared Sensor 100m Waterproof IR Alarm
Aliexpress UK