System Sensor D4120 - Search Videos

System Sensor Convention 4-wire Duct Smoke Detector D4120 Wiring Instructions

YouTubeKyle J. Schuler, SET

System Sensor Convention 4-wire Duct Smoke Detector D4120 Wiring Instructions

http://www.firealarmsonline.com brings you this easy to follow wiring instruction for the proper method of wiring multiple conventional duct smoke detectors or beam detectors off of one IDC (initiating Device Circuit) or addressable module. It is important to always run your wire in parallel through the alarm contacts of each detector prior to ...

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