System Sensor D4120 Photoelectric Duct Smoke DetectorThe System Sensor D4120 is a 4 wire photoelectric low flow duct smoke detector features two DPDT Form C relay contacts. Duct sensor housing contains D4S Sensor Component and 2D51 plug in head. Operating voltage 24 VAC DC or 120VAC COMPATIBLE SYSTEM SENSOR ACCESSORIES: DST1 Metal sampling tube duct width up to 1ft (0. 3m) DST1. 5 Metal sampling tube duct widths 1 ft to 2 ft (0. 3 to 0. 6 m) DST3 Metal sampling tube duct widths 2 ft to 4 ft (0. 6 to 1.

supervises the output wiring for faults

For wall mounting

Strobe Candela: 15/30/75/110 with Red “FIRE” Lettering

Duct Sensor Housing with Relay Output

unshielded twisted pair

The Simplex 4009-9810 is a Class B Fiber Optic Receiver with IDNet Repeater for use with TrueAlert compatible addressable systems

Compatible Synchronizaion Sources: Edwards CC Series Signal Modules

Simplex 4100-3111 IDNet Short Circuit Isolating Loop Output Module

Box with Glass Door and Dress Panel

The B114LPBT base is intended for use in 4-wire systems with terminals provided for remote annunciator and relay connections

Nominal Voltage

Both modules occupy one rail space in the fire alarm control cabinet and provide removable field wiring terminals to aid installation