An advanced, portable CO₂ monitor that measures not only carbon dioxide but also temperature, relative humidity, and atmospheric pressure. This sensor operates on batteries.

The Aranet4 Home is a compact, portable CO₂ monitor powered by batteries, ideal for use in schools, offices, or at home. In addition to CO₂, it also measures temperature, humidity, and air pressure. Current readings are clearly shown on the e-ink display with a traffic light indicator and audible alarm.