Patent ID: 7335886
Filing Date: 2008-02-26
Classification: G08B

Abstract:
1. A ceiling-mountable passive infrared detector device suitable for mounting to a ceiling, comprising: a) a cover comprising b) an electronic passive infrared detector subassembly comprising a printed circuit board on which an infrared sensor and processing circuitry are mounted, wherein said processing circuitry is for processing electrical signals generated by the infrared sensor and producing output signals; wherein the electronic passive infrared detector subassembly is located with respect to the cover such that the infrared sensor is aligned with the lens array when the cover is mounted to an opening in a ceiling such that the infrared sensor detects infrared energy passed through the lens array from a field of view defined by the juxtaposition of the lens array and the infrared sensor, in which the printed circuit board extends away from the cover whereby at least a first part of the printed circuit board will be located within the opening in the ceiling when the cover is mounted to the ceiling.