ALARM SYSTEM
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Abstract
The present invention is an alarm system comprising an alarm handset (10) having a housing (30), a detector circuit (100) having means (102, 104) for receiving a preselected signal from a remote transmitter (40) and generating a first detection signal in response thereto, first sensing means for sensing change in a preselected parameter of the handset, warning means (300) for generating a warning signal, alarm means (400) for generating an alarm signal and control means (500) responsive to receipt of the detection signal to activate the alarm means (400). The control means (500) is operable to activate the warning means in response to at least one of receipt of the control signal and sensing of the change in the preselected parameter of the handset.
25 Citations
16 Claims
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1-8. -8. (canceled)
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9. An alarm system comprising:
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an alarm handset having; a housing; a detector circuit configured to receive a predetermined signal from a remote transmitter and to generate a first detection signal in response thereto; a first sensor configured to sense change in a predetermined parameter of the handset; a warning device configured to generate a warning signal; an alarm configured to generate an alarm signal; and a control circuit configured to activate the alarm upon receipt of the detection signal; wherein the control circuit is further configured to activate the warning device in response to at least one of; (a) receipt of a control signal; and (b) sensing of the change in the preselected parameter of the handset. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification