Simplex 2098-9637 Fire Alarm Detector Base Photoelectric With Relay Module

Simplex 2098-9637 Fire Alarm Detector Base 20989637

SIMPLEX 2098-9637 Fire Alarm Detector Base Without Module **Yellowed**

NEW Simplex 2098-9739 Fire Alarm Smoke Detector End of Line Relay Module

Vintage Simplex 477-669 Fire Alarm Photoelectric Smoke Detector Head

Simplex 2098-9636 Fire Alarm Photo-Electric Smoke Detector

(1) *New* Simplex 2098-9637 Conventional Fire Alarm Detector Base With Relay