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Since the siren in the building will still sound even though no signal is being sent, everyone inside should know that something is wrong.

Some systems can even be programmed to send a signal when the main phone line is tampered with so that you will know when it happened. These are sometimes not as dependable as a solid phone line for relaying signals (we've all dealt with our phones suddenly losing signal for no apparent reason) but they can be utilized as a backup plan.

Consider a cellular or radio backup, which sends signals wirelessly.

238000006011 modification reaction Methods 0.000 claims description 14.238000004891 communication Methods 0.000 claims description 30.230000000875 corresponding Effects 0.000 claims description 61.

Assignors: FULKER, JIM, DAWES, PAUL, SUNDERMEYER, KEN Publication of US20160065413A1 publication Critical patent/US20160065413A1/en Priority claimed from US15/204,662 external-priority patent/US10522026B2/en Priority claimed from US15/237,873 external-priority patent/US20170185277A1/en Priority claimed from US15/238,864 external-priority patent/US20170185278A1/en Priority claimed from US15/292,866 external-priority patent/US20170257257A1/en Priority claimed from US15/354,380 external-priority patent/US11258625B2/en Publication of US10348575B2 publication Critical patent/US10348575B2/en Application granted granted Critical Priority claimed from US17/576,336 external-priority patent/US20220173934A1/en Status Active legal-status Critical Current Adjusted expiration legal-status Critical Links

ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Priority to US13/929,568 priority Critical patent/US10444964B2/en Priority to US14/704,098 priority patent/US10348575B2/en Application filed by IControl Networks Inc filed Critical IControl Networks Inc Assigned to ICONTROL NETWORKS, INC. Original Assignee IControl Networks Inc Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) ( en Inventor Ken Sundermeyer Paul DAWES Jim Fulker Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Active, expires Application number US14/704,098 Other versions US20160065413A1 Google Patents US10348575B2 - Control system user interface US10348575B2 - Control system user interface