Quantity   Component name
1 × CO2 Sensor Sweden SenseAir LTD, S8 0053 CO2 Sensor
1 × Formaldehyde sensor England DART SENSORS LTD, WZ-S Module
1 × PM2.5/PM10 Laser Sensor China PlantPower LTD, PMS7003, PMS7003M
1 × Temperature & Humidity sensor Switzerland SENSIRION LTD, SHT20 Sensor
1 × VOCs sensor China Winsensor LTD, ZM01 IIC BUS VOCs MEMS Sensor
1 × MCU Potentiometers, Trimmers, Variable Resistors / Potentiometers
1 × Battery Charger TP4056, 800mA charger chip
1 × RTC Clock PCF8563
1 × WIFI Module ESP-8266