The ZH03B is a compact air quality sensor module manufactured by Winsen. It is designed to measure airborne concentrations of volatile organic compounds (VOC) and particulate matter (PM2.5/PM10) via an ultra-low power electrochemical carbon dioxide-based technology. The ZH03B features a wide range of detection capabilities, including good linearity and fast response, enabling it to capture 0.03 parts per million of a VOC concentration. The device integrates a wide-range of technology, including temperature and humidity sensors, adjustable sampling rate depending on application requirements and a dust/PM sensor. The device is compliant with the RoHS standard, making it an environmentally friendly and safe to use product.