|
US2002135491A1
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Electronically controlled multi-tone peripheral
|
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Fire control panel monitoring for degradation of wiring integrity during alarm state
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Alarm system having improved control of notification appliances over common power lines
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Fiber-sync communications channel
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Early fire detection using temperature and smoke sensing
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Redundant video alarm monitoring system
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Method and apparatus for adapting voltage control in alarm systems
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Alarm system with individual alarm indicator testing
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|
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Method and apparatus for determining proper installation of alarm devices
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Self-aligning electrical connector
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Smoke/fire detector
|
|
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Redundant alarm monitoring system
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|
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Smoke detector housing for improved smoke collection
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|
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Early fire detection using temperature and smoke sensing
|
|
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Synchronized strobe alarm system
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Emergency strobe light
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Time recorder with code reader and data storage
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|
US5761996A
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Pivoting time recorder
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|
US5710541A
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|
Smoke/fire detector
|
|
US5764250A
|
|
Dual-line time recorder
|
