The SGP40 VOC Sensoris a digital VOC (Volatile Organic Compounds) sensor module which incorporates SGP40, designed for air quality monitoring. It can be used to measure fire coal, natural gas emissions, /cooking smoke, and emissions from constructing activity, decoration material, furnitures, , then generate digital signals for triggering air treatment devices. The SGP40 VOC Sensoris small in size for easy integration into air treatment devices and air quality monitors, definitely an perfect choice for learning air quality monitoring. Incorporates SGP40, for measuring 0 ~ 1000 ppm of ethanol equivalents Features humidity-compensation and low-heat-dissipation, providing outstanding performance on sorts of environments Digital I2C output, less interference Onboard voltage translator, compatible with 3.3V/5V operating voltage Colour: blue Material: plastic Package Contents: 1 x sensor module 1 x 4pin cable (20cm, random color, don't accept the specified color) Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.