The 23901.01 is a Replacement Prisms for Reflective Beam Smoke Detectors. Also used for "Retro Mode" with the Fireray 2000.
The purpose of the Fireray Reflective Prism 23901.01 is to reflect the beam that is emitted by the Detector back to its source. Compatible with all of the Reflective Beam Detectors within Fireray's range (Fireray One, Fireray 5000, Fireray 50R & Fireray 100R)
Features