Commercial Properties Integrate with weather Manage, hearth, everyday living security and entry Command methods on an individual monitor. Optical beam smoke detectors are uniquely suited to shielding structures with huge open areas with superior ceilings for instance a warehouse or atrium. The OSI-R-SS detector can be a blended transmitter/receiver unit https://www.firesense.co.uk/type/conventional-fire-system/conventional-beam-detectors/