A system and method for improved white light immunity for IR motion sensors. The system comprises a first sensor responsive to light in a first range of wavelengths in the secure area, the first sensor generating a first output signal indicative of a first detected parameter of the light in the first...http://www.google.com/patents/US8035514?utm_source=gb-gplus-sharePatent US8035514 - Method to improve white light immunity of infrared motion detectors