Detection device

Details Detection device Detection device

G - Physics

08

B

G08B 1/08 (2006.01) G08B 21/08 (2006.01)

Patent

CA 2134587

A B S T R A C T A detection device 10 includes a transmitter 14 which transmits a transmitted signal 16 of a first characteristic and, upon the occurrence of a predetermined event, causes a change in the characteristic of the transmitted signal 16. A receiver 18 is arranged remote from the transmitter 14, the receiver 18 being responsive to the transmitter 14. A discernible alarm 20 is connected to the receiver 18 to be activated by the receiver 18 when the receiver 18 receives the transmitted signal of changed characteristic or the receiver 18 fails to receive the transmitted signal 16.

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