| 摘要 |
A screen unit has opposed first and second sides and includes a robust mesh having a perimeter, and a frame engaging the perimeter of the robust mesh supporting and preventing relative movement between the frame and the mesh. A security device, formed in the frame, includes sensor apparatus to detect unauthorized tampering of the screen unit that is operatively coupled to a camera apparatus, visual alarm apparatus, and audible alarm apparatus. In response to the sensor apparatus detecting unauthorized tampering of the screen unit, the camera apparatus to collect visual imagery from each of the first and second sides of the screen unit, the visual alarm to issue visual alarm stimulus on each of the first and second sides of the screen unit, and the audible alarm apparatus to issue audible alarm stimulus on each of the first and second sides of the screen unit.
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