SAF Aranet4 Home Wireless Indoor Air Quality Monitor for Home, Office or School Portable

Monitors the air quality in your home, school, office or any other indoor space. Communicates via Bluetooth with smartphone app, displays values for the last 7 days. Measures CO2 concentration, room temperature and humidity. Suitable for indoor use. Battery life of up to 4 years (2x AA batteries). Protection class: IP20.