Aranet4 Pro

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 its battery life up to 2 years (2xAA).

Aranet4 device is Bluetooth compatible, using your iOS or Android device.  If you plan on using more than one Aranet4, Aranet4 PRO is your best choice.