System Sensor D4120W Watertight 4-wire Photo Duct Smoke DetectorThe System Sensor D4120W is a watertight 4 wire photoelectric low flow duct smoke detector. Weatherproof housing contains a System Sensor 2D51 4 wire conventional photoelectric sensor head. Features two DPDT Form C relay contacts. Operating voltage 24 VAC DC or 120VAC Backward compatibility with existing Innovair products, including remote accessories COMPATIBLE SYSTEM SENSOR ACCESSORIES: DST1 Metal sampling tube duct width up to 1ft (0. 3m) DST1. 5

installation is simple with its installer-friendly base and plug-in design

As part of the Enhanced Integrity line of products

Application Only

The System Sensor L-Series of speakers and speaker strobes reduce costly ground faults using a plug-in design and universal mounting plate that allow the installer to pre-wire mounting plates

Supplied with all Key Reset Stations

Two riser inputs

Black enclosure with 7A power supply

Inner and outer doors for 3-CAB21B

and NFS-320 FACPs

eBay The Gamewell-FCI MCS-COF3-IV is a plug-in device that detects fire and carbon monoxide (CO)

provides outputs for common indicators and 32 alarm/supv zones as well as inputs for common switches

The single-action pull-station is activated by a single pull-down of the alarm handle