Silent Knight SD505-T2 Sampling TubeThe Model SD505 DUCT Duct Smoke Detector is a heavy duty detector housing with the SD505 APS Analog Photoelectric Smoke Sensor pre installed. It provides early detection of smoke and products of combustion present in air moving through HVAC ducts in Commercial and Industrial applications. The SD505 DUCT is in a heavy duty gray steel back box with a clear cover. It installs quickly and easily.

Battery Shelf (required for 50 Ah batteries)

Type: Semi-flush trim plate for 4-inch square box IAM mounting

The 4098-9789 TrueAlarm Analog Addressable Detector Base features wired connections for 2098-9808 Remote LED alarm indicator or 4098-9822 relay (relay is unsupervised and requires separate 24 VDC)

100-watt single channel

4100U TIC to Legacy Power/Com

Use to cover surface mounted 1-1/2” deep box with 1-1/2” deep extension external to wall

tamper resistant enclosure

It provides either a Class A or Class B fault tolerant initiating device circuit (IDC) for normally open contact fire alarm and supervisory devices

with compact communications module

The Simplex 4100-7158 Master Controller CPU Card — with Ethernet Connection Upgrade Kit (door assembly with user interface not included) for: 4100U with or without operator interface

The Simplex 2099-9144 is a non-coded Explosion-Proof & Weather-Proof Station with Enclosure

— 2098-9808