Abstract: An air quality monitor apparatus for use in a ducted system. The apparatus comprising an enclosure having at least one air exchange port, at least one optical system and a plurality of sensors. The air exchange port creates an air stream pathway through the enclosure, while the optical system provides light across the air stream pathways. The plurality of sensors has access to the air stream pathway are configured to measure air quality data of the air stream. At least one microcontroller is configured to process the measured air quality data. At least one communication system is configured to communicate the processed air quality data with an outside network.

Abstract: An environmental system on a module apparatus for detecting and measuring particles entrained in an air stream. The apparatus includes a highly-integrated silicon circuit board. The circuit board has a plurality of embedded sensors, signal conditioning and processing. The plurality of sensors to detect pollution and other aspects of the physical environment. The apparatus also including a mechanical structure surrounding the top side of the circuit board. The structure forms an air pathway having an inlet and an outlet and a laser beam pathway having an emitter end and a beam line termination end. The air pathway intersects the laser beam pathway. A highly miniaturized optical particle scattering detector is located proximal to the intersection. A laser is located in the emitter end of the laser beam pathway.