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

Simplex 2098-9637 Fire Alarm Detector Base Photoelectric w/ Relay Module

Simplex 2098-9637 Fire Alarm Detector Base 20989637

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

Simplex 2098-9529 Fire Alarm Detector Base With Integral Heat Detector

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

SIMPLEX 4098-9791 | SENSOR BASE WITH RELAY DRIVER FIRE ALARM | 40989791

Vintage Simplex 477-669 Fire Alarm Photoelectric Smoke Detector Head