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Glynn Johnson 280-US28 Sensaguard Holder/Release Smoke Detector (Clear Anodized)

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Glynn-Johnson provides a holder/release smoke detector designed to allow fire doors to remain open for easy passage, while releasing doors in an emergency. The SensaGuard™ Series 280 features an internal ionization-type smoke detector, powered by a single nine-volt battery. Its fail-safe operation automatically releases the door when battery power drops below 7.2 volts.

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Product Description


• Fail Safe Operation
• Battery Operated
• Automatic Release when Battery Power Drops
• Easy to Install
• Self-contained
• Adjustable Hold-Open
• Stand-Alone Detector/Holder
• SENSAGUARD™ will hold the door open at a single, adjustable position:
–Pull Side Mounted adjustable from 90º to 130º
–Push Side Mounted adjustable from 90º to 180º
• Adjustable Hold-Open force
• Unit is furnished with battery.
• To replace battery, use a 9V Alkaline Eveready Energizer ® #522 battery or Duracell® #MN1604. Do not substitute.
• Finish: US28 Clear Anodized Aluminum

Additional Information

Additional Information

Manufacturer Glynn Johnson Allegion
Model 280-US28
Dimensions Channel 27" Long x 1-3/8" Tall x 2-1/8" Depth
Angle Bracket 2-3/4" Wide x 1" Tall x 1-1/2" Depth
Hand Non-Handed
U.L. Listed UL Listed
Compliances NFPA 101, Life Safety Code
5–2.1.8 Self Closing Devices Exception C, 2
Warranty 1 Year Warranty
Weight 15.0000


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