To protect costly sensor units of beam type smoke detectors from damage leading
to misalignment and false alarms. This model protects the vital sensor units of
projected beam type smoke detectors in large areas. These areas include
gymnasiums, warehouses and auditoriums. STI Smoke Beam Guards are designed to
protect both transmitter and receiver sensors. STI-9625 is used on the 6424
System Sensor Infrared Beam Smoke Detector. Installation is simple with anchors
and screws provided.