SECURITY SYSTEM
First Claim
Patent Images
1. A security system for an electrical device connected to a mains electricity supply, the security system comprising:
- a confirmation transmitter interposed between the electrical device and the mains electricity supply, the transmitter configured to send a confirmation message via the mains supply; and
a control unit operatively connected to the mains supply, the control unit configured to receive the confirmation message;
wherein the control unit is configured to activate an alarm if the control unit does not receive the confirmation message.
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Abstract
There is provided a security system for an electrical device connected to a mains electricity supply, the security system comprising a confirmation transmitter interposed between the electrical device and the mains electricity supply. The transmitter is arranged to send a confirmation message via the mains supply to a control unit that is operatively connected to the mains supply. The control unit is arranged to activate an alarm if the control unit does not receive the confirmation message.
25 Citations
42 Claims
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1. A security system for an electrical device connected to a mains electricity supply, the security system comprising:
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a confirmation transmitter interposed between the electrical device and the mains electricity supply, the transmitter configured to send a confirmation message via the mains supply; and a control unit operatively connected to the mains supply, the control unit configured to receive the confirmation message; wherein the control unit is configured to activate an alarm if the control unit does not receive the confirmation message. - View Dependent Claims (2, 3, 4, 5, 7, 8, 12, 13, 15, 16, 17, 18, 41)
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6. (canceled)
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9-11. -11. (canceled)
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14. (canceled)
- 19. A control unit for a security system, the control unit being operatively connected to a mains electricity supply, and comprising a receiver configured to detect a confirmation message sent via the mains supply from a confirmation transmitter interposed between an electrical device and the mains electricity supply, and further comprising alarm activation means to activate an alarm if the confirmation message is not received.
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21. (canceled)
- 23. A confirmation transmitter constructed and configured to be interposed between an electrical device and a mains electricity supply, wherein the confirmation transmitter is configured to send a confirmation message via a mains supply to a remote control unit, to enable the remote control unit to activate an alarm if the confirmation message is not received.
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25. (canceled)
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27. (canceled)
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28. An electrical device comprising:
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connection means for connecting the electrical device to a mains power supply; and a confirmation transmitter associated with the connection means; wherein the confirmation transmitter is configured to send a confirmation message via the mains supply to a remote control unit, to enable the remote control unit to activate an alarm if the confirmation message is not received. - View Dependent Claims (29, 30)
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31-40. -40. (canceled)
Specification