Specification of AirTracker Air-tracker is a solar powered an environmental sensor array. Airtracker measure following pollutant and environment characteristic: Gases: Carbon monoxide CO, Nitrogen dioxide NO2, Hydrogen H2 , Ammonia NH3, Ethanol C2H5, Methane CH4 , Propane C3H8, Iso-Butane C4H10 , Ozone, Sulfur Dioxide SO2, Carbon Dioxide CO2, Particles: P2.5 and P10; Temperature sensor; Humidity sensor ; Barometric Pressure sensor; Sound Level to Monitor Noise Pollution ir-tracker equipped with Bluetooth Low Energy interface used for installation activation, firmware update and location reporting/positioning. Optionally GPS module could be installed. Air-tracker is equipped with 4 x 0.5W solar panels and 2 x 18650 Lithium batteries. Battery reserve eliminates needs for external power source and Air-tracker could operate 28 days without sun.