• Power supply:
  3 x AAA alkaline batteries (LR03)
  2 years battery life
• Dimensions: 4.7 x 2.7 x 1.0 inches / 120mm × 69mm × 25.5mm
• Weight: 5.2 ounces / 130g (with batteries)
• Operation environment:
  Temperature: 39°F to 104°F / 4°C to 40°C
  Relative Humidity: < 85%

• Radon sampling: Passive diffusion chamber
• Detection method: Alpha spectrometry
• Measurement range:
  0 – 500 pCi/L
  0 - 9999 Bq/m³
• Accuracy/precision at 5.4 pCi/L / 200 Bq/m³:
  After 7 days ~ 10 %
  After 2 months ~ 5%

US Model 223 / EUR Model 244

Package content:
Radon detector
3 x AAA alkaline batteries (LR03)
User manual

Comes with a standard warranty, details are available here

Free 5-year warranty available: Airthings has a 5-year extended warranty available on all air quality monitors for consumers. Registration is required within 30 days of the purchase on the Airthings website here. Registration is free. This extra coverage is in addition to your standard warranty that applies even if you choose not to register your product. Not registering your product does not diminish your statutory rights.