The Lascar Electronics EL-WEM+ WiFi Indoor Air Quality Monitor Plus helps ensure adequate indoor air quality (IAQ) at home or at work. The ELWEM+ measures CO2, particulate matter (PM2.5), temperature, humidity, VOC's and pressure, rating the IAQ on five levels from Excellent to Inadequate. The ELWEM+ status ring shows the IAQ level at a glance, changing to red when the IAQ reaches either of the two lowest levels, a sounder can also be activated when IAQ is low. The WiFi indoor air quality monitor features a quick set up using the EasyLog Cloud App, allowing users to easily activate automatic alerts via email or SMS messages. This unit also includes a Do Not Disturb mode, which allows users to set times of day when the status ring and sounder are turned off.