https://www.ornicom.com/products/linear-detectors/reflective-optical-beam-detector-fr5000-102.html
Linear Smoke Detectors: Reflective Optical Beam Detector FR5000-102
Motorised Reflective Optical Beam Smoke Detector 100m FR5000 EN54 - 5000-102 - FFE
linear smoke detectorsreflectiveopticalbeam
https://www.ornicom.com/products/linear-detectors/set-of-detectors-for-fireray-3000-fr3000-016.html
Linear Smoke Detectors: Set of Detectors for Fireray 3000 FR3000-016
Set of Detectors (transmitter and Receiver) for Fireray 3000 UL - 3000-016 - FFE
linear smoke detectorsset