Open type gate inhibition unlawful penetration alarm device
An alarm device and illegal entry technology, applied to alarms, anti-theft alarms, instruments, etc., can solve problems such as low efficiency, failure to meet humanized management requirements, and lack of safety and reliability in timed pass-through access control, etc., to achieve strong security , Prevent the effect of using time difference
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[0014] The specific embodiments of the present invention can be referred to the accompanying drawings. Figure 1 shows the distribution diagram of an alarm device. The first detector is set at the entrance of an entrance channel 1. No matter where the detector is installed, its sensing area should be at the entrance of the narrow entrance channel 1, as shown in Figure 1. Given a first detector 2 hung on the top. At the exit of the entrance channel 1, a second detector 3 is provided, and its setting requirements are the same as those of the first detector, except that its sensing area is at the exit of the entrance channel 1. The detector can also be composed of a group of probes arranged in different orientations. The card reader 4 is arranged in the middle of the entrance channel 1, and can be a contact type or a non-contact type, such as a wireless induction type. If it is a contact type, it should be located at a location that can be reached by people in the passage.
[0015] f...
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