Programmable alarm system
First Claim
1. An alarm system which comprisesa communicator unit including a memory unit and at least one alarm sensor unit and adapted for connection to a telephone line,a central receiver adapted for connection to the telephone line to receive and transmit signals between it and said communicator unit,means in said communicator unit for delivering signals to said central receiver representing conditions of alarm, trouble and/or restoral, opening and closing, of said sensor unit, andmeans detachably connected to said communicator unit for programming said memory unit and sensor unit or units for selected operating states.
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Accused Products
Abstract
The invention involves a programmable alarm system including a local communicator having one or more sensors responsive to problem situations such as illegal intrusion, fire, panic or the like, which can be installed in a residence, office or other premises to sense a problem situation, and after conversion to a digital format transmit the information through a telephone line to a central receiver for temporary and permanent display of the location of the residence or other premise and the particular problem encountered. The communicator operation and sensor characteristics can be programmed for each location by temporary attachment of a programmer unit, thus to provide flexibility. In addition, in the event that the integrity of the system is interrupted (e.g., line severance), a separate redundant system is rendered operative to indicate the problem situation.
140 Citations
14 Claims
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1. An alarm system which comprises
a communicator unit including a memory unit and at least one alarm sensor unit and adapted for connection to a telephone line, a central receiver adapted for connection to the telephone line to receive and transmit signals between it and said communicator unit, means in said communicator unit for delivering signals to said central receiver representing conditions of alarm, trouble and/or restoral, opening and closing, of said sensor unit, and means detachably connected to said communicator unit for programming said memory unit and sensor unit or units for selected operating states.
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12. In an alarm system,
a communicator unit including a memory unit and at least one alarm sensor unit constituting a loop sensor circuit having alarm, trouble, and normal operating states, and a programmer unit detachably connected to said communicator unit and arranged to program said memory unit and sensor circuit for selected operating states.
Specification