QGSM thin film digital pyroelectric IR sensor modules for gas detection and concentration measurement combine high sensitivity with fast response times and high dynamic range to ensure rapid and accurate detection of target gases. The gas sensor modules consist of a breakout board, on which a SMD motion sensor is mounted, ideal for easy evaluation and quick prototype development. These sensors integrate a digital, current mode read-out that permits lower IR-emitter duty cycles, thereby saving significantly on system level power consumption, while maintaining high SNR. Industry standard I2C communication enables plug-and-play connectivity to microcontrollers and allows easy tuning and calibration. Programmable gain and filtering offer maximum flexibility in system design. These sensors can be connected together in linear series to allow synchronized sampling across devices.