Numens

  2-wire and 4-wire models for DC 12 V and DC 24 V operation ·    N/C or N/O alarm relay output ·    Loud 85 dB internal sounder ·    Connects to zone monitor for use with addressable control and indicating equipment

Photoelectric smoke sensing chamber technology Integrated indicator provides visual indication of both the quiescent condition and an alarm condition Test and Hush functions in a single button Test button verifies battery and alarm operation Test and Hush visual indicator Loud 85 dB sounder to alert occupants Surface-mount device (SMD) circuit board design Single DC 9 V user-replaceable battery provides up to 18 months operation under normal conditions 30-day low battery audible warning signal Battery missing indicator prevents the unit from being installed without the battery fitted Up to 38 units interconnectable using the wired transmission path