MONITOR CO₂ AND RADON WITH THIS 2-DEVICE BUNDLE

Includes

• 1 CO2 Monitor
• 1 Radon Monitor

High CO₂ levels don't just feel stuffy—they harm your health and productivity. 

High CO₂ means re-breathing air and viruses that have already been in someone else's lungs, increasing potential for infection. Additionally, studies from Harvard and CU Boulder show that CO₂ levels of just 1,400–1,500 ppm (common indoors) can reduce high-level cognitive function by 50%.

The Aranet4 HOME CO2 Monitor and Aranet One Radon Monitor are high quality industry-leading portable monitors that keep an eye on your air so you don’t have to.

• Take Control of the Air you Breathe: Detect unsafe indoor air so you can open a window or door, alert staff, or take action against radon
• Beat the Brain Fog: Stop the afternoon cognitive drop in offices and classrooms
• Optimize Your Sleep: Catch overnight CO₂ buildup in the bedroom to wake up feeling refreshed
• Reduce Lung Cancer Risk: Know if your house needs a radon ventilation system
• Easy to Read: view real-time data on two large, crisp E-ink displays. CO2 monitor includes free re-breathed sticker.

Why Choose Aranet?

• Highest Quality: The industry leader. Built in Europe with a high-quality sensors.

• Tiny and Portable: Runs for years on just two AA batteries.

• No Hidden Fees: No subscriptions, no recurring costs.

• Data logging and Integration: Sync via Bluetooth to the free Aranet Home app to track 30-day trends and set custom alerts.

Take control of the air you breathe.

CO₂ Monitor Technical Specification

• CO₂ Concentration: 0-9999 ppm
• CO₂ Accuracy: +/- 30 ppm + 3%
• Temperature Range: 0-50 deg. C, +/- 0.3 deg. C
• Humidity Range: 0-85%, +/- 3%
• Pressure Range: 600-1100 hPa (60-110 kPa, +/- 0.3kPa) (only visible in app)
• Refresh Rate: 1 reading per minute (adjustable to 2/5/10 mins)
• Historic Data: up to 30 days
• Includes free re-breathed % sticker
• Weight: 104g (3.7 oz)
• Dimensions: 71 x 71 x 24 mm (2.8" x 2.8" x 0.94")
• Batteries: 2 x AA Alkaline (included)
• Wall Mountable
• Can be self-calibrated annually
• Bluetooth can be enabled/disabled with a switch

CO₂ Monitor Resources

• Quick Start Guide (EN)
• Quick Start Guide (FR)
• Datasheet
• User Manual
• How to reduce the risk of COVID infection with Aranet4
• Unboxing video

Radon Monitor Technical Specification

• Detector type: α-decay event detection using ionization chamber
• Range: 0-4000 Bq/m³
• Accuracy stabilizes within 1 hr of placement
• Historic Data: up to 35 days
• Includes free re-breathed % sticker
• Weight: 104g (3.7 oz)
• Dimensions: 105 x 80 x 71 mm (4.13" x 3.15" x 2.80")
• Weight: 220 g
• Batteries: 2 x AA Alkaline (included)
• Enclosure material: polycarbonate
• Not wall mountable
• Bluetooth can be enabled/disabled in settings
• Buzzer alarm can be enabled/disabled in settings

Radon Monitor Resources

• Quick Start Guide (EN)
• Datasheet / Manual