Features:Model Number: 2251TBItem Number: 1430958Photoelectric w/Heat Detector Head, Requires Base

Features:Model Number: 2251BItem Number: 1430957Photoelectric Detector Head, Requires Base

Features:Model Number: F110Item Number: 1430954Trim Ring For 6" Flanged Bases - Old Profile

Features:Model Number: M500RItem Number: 1430951Relay Module 2 Form C

Features:Model Number: M500SItem Number: 1430950Control Mod for Supervised

Features:Model Number: M502MItem Number: 1430949Analog Sub Loop Module (Ss)

Features:Model Number: B501Item Number: 14309474 In Analog Detector Base

Features:Model Number - DST3Item Number - 14309983 Ft Duct Sampling Tube

Features:Model Number - D4SItem Number - 14309911430991 Potter D4S Duct Smoke Detector 4-Wire Conventional Sensor Only

Features:Model Number - D4P120Item Number - 1430990Duct Smk Detector 4-Wire Conventional Power Board Only

Features:Model Number - D4120WItem Number - 1430989Watertight 4 Wire Photo Duct

Features:Model Number - D4120Item Number - 14309874 Wire Conventional Duct Detector