Simplex 4251-21L

Category :

This is the “Local Alarm” variant of the Simplex 4251-21.

  • Simplex 4251-21L
  • Simplex 4251-21L
  • Simplex 4251-21L
  • Simplex 4251-21L
  • Simplex 4251-21L
  • Simplex 4251-21L
  • Simplex 4251-21L

Also in the collection
GE 521BXT

GE 521BXT

Category :
I think that this smoke detector might be intended for use in security systems.
Gaylord NC-1357A

Gaylord NC-1357A

Category :
This is a rebranded EST/Edwards 270-SPO for use in some sort of ventilator system.
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