AirGradient ONE Indoor Air Quality Monitor

£300.00
  • Measures PM1 / PM2.5 / PM10.
  • CO₂ (SenseAir S8).
  • TVOCs & NOx (SGP41).
  • Temperature & humidity.
  • LED status bar.
  • Onboard display.
  • Open‑source firmware.
  • Home Assistant & Homey support.
  • RESET‑accredited.
  • Weatherproof enclosure.
  • Wall or pole mounting.
Estimated delivery on or before

  Free delivery on orders over £50
  14-day hassle-free returns
  100% secure transactions
  Every purchase helps a UK charity
  Over 2000+ happy customers

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Description

The AirGradient ONE (Model I‑9PSL) is a professional‑grade indoor air quality monitor that measures PM1, PM2.5, PM10, CO₂, TVOCs, NOx, temperature, and humidity. With a built‑in LED status bar, onboard display, open‑source firmware, and native Home Assistant/Homey support, it delivers accurate, real‑time air quality insights for homes, offices, classrooms, and commercial spaces.

How It Works:

  • [PM1 / PM2.5 / PM10 Monitoring]: Uses the Plantower PMS5003T laser sensor for precise particulate readings.
  • [CO₂ Monitoring]: SenseAir S8 NDIR sensor detects CO₂ levels and identifies ventilation issues.
  • [TVOC & NOx Monitoring]: Sensirion SGP41 provides advanced gas detection for chemicals, odours, and combustion by‑products.
  • [Temperature & Humidity]: Built‑in sensors track comfort and environmental stability.
  • [LED Status Bar]: Colour‑coded air quality indicator visible across the room.
  • [Onboard Display]: Shows real‑time readings without needing an app.
  • [Open‑Source Firmware]: Modify, extend, or integrate the device however you like.
  • [Home Assistant & Homey Support]: Native integration for smart home automation.
  • [Flexible Data Use]: Send data to any server, including AirGradient’s platform or your own.

A Top Pick For:

  • [Smart Homes]: Native Home Assistant/Homey support + open‑source flexibility.
  • [Schools & Offices]: CO₂ + PM monitoring helps optimise ventilation and safety.
  • [Clinics & Healthcare]: High‑grade sensors for reliable indoor air tracking.
  • [DIY & Makers]: Fully customisable hardware and firmware.
  • [Commercial Deployments]: RESET‑accredited and compliant with building standards.

Why We Like It:

  • [Professional‑Grade Sensors]: Same sensor families used in commercial IAQ systems.
  • [Open‑Source Freedom]: No locked‑down ecosystem — modify anything.
  • [Comprehensive Metrics]: Eight key indoor air quality parameters in one device.
  • [RESET Accreditation]: Meets global building‑standard requirements.
  • [Robust ASA Enclosure]: UV‑resistant, durable, and engineered for accurate airflow.

Care And Maintenance

  • [Sensor Modules]: Keep vents clear for accurate airflow.
  • [Enclosure]: Wipe with a soft cloth; ASA plastic resists UV and wear.
  • [Mounting]: Use screws or stainless‑steel zip ties for secure installation.
  • [Firmware]: Update or customise via AirGradient’s open‑source tools.
  • [Data Management]: Export or stream readings to your preferred server.

 

Specification
  • Model: AirGradient ONE (I‑9PSL)
  • Sensors:
    – PM1/PM2.5/PM10: Plantower PMS5003T
    – CO₂: SenseAir S8
    – TVOCs/NOx: Sensirion SGP41
    – Temp/Humidity: Integrated sensors
  • Metrics: PM1, PM2.5, PM10, CO₂, TVOCs, NOx, temperature, humidity
  • Connectivity: Home Assistant, Homey, AirGradient platform, custom servers
  • Enclosure: ASA plastic (UV‑resistant, weatherproof)
  • Mounting: Wall or pole (screws or stainless‑steel zip ties)
  • Certification: RESET‑accredited
  • Best For: Homes, offices, schools, commercial IAQ monitoring
Includes

  • AirGradient ONE monitor
  • Mounting hardware (screws/zip ties depending on kit)
  • User documentation

Q&A

Q: Does it measure CO₂?
Yes — using the SenseAir S8 NDIR sensor.

Q: Can I integrate it with Home Assistant?
Yes — native support is built in.

Q: Is it open‑source?
Fully — firmware and data handling can be customised.

Q: Can it be mounted outdoors?
This model is designed for indoor use; AirGradient also makes outdoor versions.

Q: Is it RESET‑certified?
Yes — suitable for professional building‑standard deployments.

Delivery & Returns

Order Confirmation

As soon as you place your order, you will receive an order confirmation e-mail. We will automatically reach out to our supplier to confirm that the item is in stock. We will process the charges to your credit or debit card if your item is in stock. 

Free Delivery On Orders Over £50

  • Dispatched directly from a supplier in the UK.
  • Order processing time: 1-2 business days.
  • Estimated delivery time: 1-2 business days.
  • Orders are not shipped or delivered on weekends or during public holidays. 
  • If we are experiencing a high volume of orders, shipments may be delayed by a few days.

Free Returns

Naturally, we hope you'll love your purchase, but it's OK to change your mind. Our return policy lasts 14 days. For complete information, please read our returns and refund policy.

Curious About Your Air Quality?

Rent a monitor for up to 4 weeks starting from £40, test your air and make informed choices!
  • Flexible rentals, choose your preferred 2-4 weeks.
  • Fast delivery, Evri Next Day delivery included.
  • Prepaid return label; drop at any Evri shop.
  • £80 deposit, refunded after the safe return.
  • Monitors PM2.5, PM10, CO2 (NDIR), temperature and humidity.
TEST MY AIR

FREE DELIVERY

Free delivery on orders above £50

14 DAYS FREE RETURNS

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