Aranet4 shows CO₂ measurements directly on its e-ink screen with a corresponding color indicator and configurable sound alarms.

Aranet4 uses the most precise Nondispersive infrared (NDIR) sensor technology for accurate CO₂ measurements. It has a super-efficient e-ink display that extends it’s battery life up to 2 years (2xAA)

The sensor is compatible only with Aranet PRO base station
Measures: CO2 (carbon dioxide), temperature, relative humidity, atmospheric pressure
Line-of-Sight range: up to 3 km
Operating environment: indoor use
Transmitter power: 14 dBm
Data Transmission: 1,2, 5, 10 minutes
Battery life: Up to 2 years
Protection class: IP20
Dimensions: 70x70x24 mm