SAF Aranet4 Home: Wireless Indoor Air Quality Monitor for Home, Office or School (CO2, Temperature, Humidity and More) Portable, Battery Powered, E-Ink Screen, App for Configuration & Data History

AROVEC Air Purifier H13 True HEPA Air Filter, Cleaner for Home, Bedroom, Removes Germs, Smoke, Dust, Pollen, Odours, 3-Stage Filtration System, Ideal for Allergens, Hay Fever, Pet Dander, White

Philips Series 3000i Connected Air Purifier with Real Time Air Quality Feedback, Anti-Allergen, Combined HEPA + Carbon Filter Reduces Odours and Gases,Grey/White (AC3033/73)

INKBIRDPLUS Indoor Air Quality Monitor, Temperature and Relative Humidity, Carbon Dioxide Detector, Indoor CO2 Meter with Alarm Function CO2 Detector for Grow Tents Wine Cellars Homes Cars

INKBIRD WiFi Indoor Air Quality Monitor, CO2 Detector, Accurate NDIR Sensor, Temperature and Relative Humidity, Indoor CO2 Meter with Data Logger, for Cars, Wine Cellars, Grow Tents, Homes (INK-CO2W).