AirGradient ONE Indoor Monitor Kit (PCB v9) By AirGradient Co. Ltd. · Example build · 9 views · 0 remixes Plug four sensor modules onto AirGradient's open ESP32-C3 board for a no-solder indoor monitor of PM2.5, CO2, TVOC/NOx, temperature and humidity 0SaveRemixCopy link Estimated parts cost DifficultyEasyBuild timeabout 15 minutes (AirGradient estimate)Parts1 part · 1 pcs Start the assembly guide →