Smoke and Heat Detector, Conventional-700 Series

The Edwards photoelectric smoke detector is an interchangable head and base detector with a light-scattering optical sensor that provides outstanding stability and excellent response to a wide range of fires. 

A pulsed infrared LED light source and a high-speed photodiode sensing element are housed in an omnidirectional sensing chamber which is protected by an insect screen. The chamber is not affected by ambient light. For easy cleaning, the detector features a field-replaceable optical chamber. 

The Model 711UT and 721UT photoelectric detectors include integral fixed temperature heat detectors. The 721UT provides remote alarm and trouble LED driver outputs. 

Edwards 700 Series smoke detectors are the industry’s first conventional self-diagnostic detectors specifically designed for the demands of commercial and industrial environments. If the detector drifts out of its UL Listed sensitivity range or fails internal diagnostics, the alarm LED flashes once a second to indicate trouble. This meets NFPA 72 field sensitivity testing requirements without the need for external meters. 

Additional diagnostic information is activated by applying a magnet near the detector’s integral reed switch. This initiates a self-diagnostic routine and provides visual indication of sensitivity level, or if service is required. The magnet test causes the LED to blink. The number of blink counts corresponds to a smoke detector sensitivity range. 

And, if they become dirty over time, the 700 Series detectors automatically adjust the alarm threshold through built-in drift compensation. 

Standard Features

• Self-diagnostic capability continually monitors operation
• Automatic drift compensation
• Field-replaceable optical chamber
• Low-profile design blends into the ceiling
• Advanced nuisance alarm immunity
• Extensive two-wire compatability listings
• Agency Listings: UL268, FM, CSFM, MEA

Note: Smoke head comes with dust cover for use during construction phase.