Door/window contact system
First Claim
Patent Images
1. A position detector comprising:
- a first element having an attachment feature, the first element emitting a unique, identifying radio frequency signal in response to a received, enabling radio frequency signal wherein the first element further comprises a standard off the shelf RFID tag and protocol; and
a second element with a transmitter that emits the enabling radio frequency signal, and that emits a reporting radio frequency signal, wherein both signals are emitted by the same transmitter at the same frequency.
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Abstract
A window or door position detector includes an RFID tag attachable to the window or door, and a transceiver. The transceiver emits an activating signal to the tag. The tag in turn responds with an identifying RF signal indicative of a predetermined position of the window or door. The detector includes a transceiver which can communicate with both the tag and a displaced monitoring system control panel.
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Citations
14 Claims
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1. A position detector comprising:
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a first element having an attachment feature, the first element emitting a unique, identifying radio frequency signal in response to a received, enabling radio frequency signal wherein the first element further comprises a standard off the shelf RFID tag and protocol; and a second element with a transmitter that emits the enabling radio frequency signal, and that emits a reporting radio frequency signal, wherein both signals are emitted by the same transmitter at the same frequency. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A monitoring system comprising:
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a plurality of wireless condition detectors wherein at least one detector responds to displacement of a member from a first position to a second displaced position, and includes a transceiver which emits both a wireless activation signal to an RF responsive position sensor, and a wireless alarm reporting signal where the wireless activation signal and wireless alarm reporting signal are transmitted at the same frequency and where the RF responsive position sensor further comprises a standard off the shelf RFID tag and protocol; and a control unit in wireless communication with members of the plurality wherein the unit includes a receiver which receives the reporting signal. - View Dependent Claims (11, 12, 13, 14)
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Specification