Simplex 4098-9780 2 - wire Relay Base

Simplex 4098-9780 - Same Day Shipping (SEALED)

Simplex 4098-9682 Fire Alarm 4-wire Smoke Detector Base w/ Relay UNTESTED

Simplex 4098-9787 TrueAlarm Sensor Base w/ Relay Driver

Simplex 4098-9780 Fire Alarm Detector Base (NEW IN BOX)

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

Simplex 565-834 Duct Detector 2 Wire Board With No On Board Relay.

Simplex 4098-9682 Fire Alarm Relay Detector Base (NEW IN BOX)