Large cable access Rear or surface cable entry Loop continuity spring Automatic synchronisation of sounder Low current draw enables more devices on loop Adjustable volume control (on device or from panel) Intense strobe output Deep and high IP base options Pure White or Ivory body colours Common base with detectors (B501AP) Device protocol is backward compatible through inclusion of both SS CLIP and Advanced Protocols 32 tone selection to cover many markets (on device or from panel)

Photoelectric, integrated low-flow technology Air velocity rating from 1.5m/s to 20.3/sec Versatile mounting options: square or rectangular configuration Broad ranges for operating temperature – 20 to 70 degree and humidity 0-95% (non-condensing) Patented sampling tube installs from front or back of the detector with no tools required New cover temper signal Increased wiring space with a newly added 20mm conduit knockout Available space within housing to accommodate mounting of relay module Easily accessible code wheels on sensor head (sold separately) Clear cover for convenient visual inspection