| 摘要 |
PROBLEM TO BE SOLVED: To perform detection for crime prevention by locking sensors installed for other windows, etc., while the detection of a locking sensor installed at an arbitrary window, etc., is canceled. SOLUTION: The security system is provided with a sensor cancel circuit 212 for a sensor 211 which is installed at each window and detects the window being opened and a sensor cancel control circuit 218 which is in a detection canceled state does not detect an abnormal state even when an arbitrary window, etc., is being opened but detects other windows, etc., being opened. The sensor cancel control circuit is driven by a thyristor 215 which is driven by a non-lock switch 214 and when crime setting is canceled, the operation of the sensor cancel circuit is stopped for a specific time to places the sensor, which was placed in the window opening detection cancel state, in a opening detection state. Consequently, an abnormal state is not detected although the window is opened when crime setting is made again without resetting the detection canceled state.
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