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Envora Labs
Reserve Envora One
Devices
Envora One Available Eleven channels · one fused IAQ score Envora Radon Coming soon Real-time radon · 0–2,000 Bq/m³
Capabilities
Features Alerts, history, dashboards Developers API · MQTT · Home Assistant Envora Fleet Multi-device · org · SSO · audit
All sensors
Overview of the eleven measurements
Carbon Dioxide ppm The breath signal. How fresh is the air you are in? Carbon Monoxide ppm Low-level exposure, tracked over time. Particulate Matter µg/m³ See what you breathe. Down to one micrometre. Temperature & Humidity °C · %RH Comfort is a range, not a number. Barometric Pressure hPa Weather, altitude, storms — all in one number. VOC & IAQ Index index Every gas. Every particle. One honest score. Sound Level dBA The ambient floor, measured — never recorded. Ambient Light lx Your circadian signal, measured.
For your space
All solutions
 Home Kitchens, bedrooms, nurseries, basements. Envora shows you what you breathe — and tells you how to fix it, usually for free. Office & Co-work CO₂ is the single strongest environmental lever on office productivity — and the cheapest to fix. Envora gives facilities teams and founders the number to argue with. CO₂ and indoor air quality monitoring for schools Classroom CO₂ and indoor air quality evidence for better ventilation decisions, measurable cognitive lift, and the data trail governors and parents want. Labs & Clinics Envora One is precise enough for laboratories, clinics and regulated spaces, and comes with a signed calibration certificate per device ID. Studios & Gyms Hot yoga, spin, HIIT and small studios generate extreme humidity and CO₂ loads. Envora tells you how your ventilation is holding up — live, per-room, per-class. Podcasts & Studios Envora flags the HVAC hum, the fridge compressor, the neighbour's drill — and the concentration drift that flattens your delivery — before the tape picks any of it up. Landlords & Letting Continuous, timestamped indoor air quality records for every unit you manage — so damp disputes end in data, not arguments.
What it protects against
All protection guides
 Mould & damp risk Invisible until it is not. Allergies & dust sensitivity The 40–50% RH sweet spot. Long-term toxic gas exposure What you cannot smell, Envora can. Cooking pollution Your kitchen is an industrial chimney. Sleep & bedroom air Sleep is an environmental sport. Winter dry air Heated air is parched air. Outdoor air events When the air outside is worse than inside.
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Envora One

Envora One indoor air quality monitor.

One calibrated monitor for CO₂, PM2.5, VOCs, CO, humidity, temperature, pressure, light, sound and more. £249, one-time. No home subscription.

Full specification
Envora One multi-sensor air-quality monitor on a desk beside a laptop
  • No home subscription
  • Factory calibrated
  • Signed calibration certificate
  • API · MQTT · Home Assistant
  • Local-only mode available
  • 30-day returns
  • 2-year warranty
The questions buyers ask first

Straight answers. No marketing.

Six things people want to know before they put a £249 device on their shelf.

Will I need a subscription?
No for home users. Live readings, alerts, dashboard, history and integrations are included for the life of the device.
Can I export my data?
Yes. CSV export, REST API, MQTT broker and Home Assistant — all the data is yours, with no rate limits for personal use.
Does it work locally?
Yes. A local-only mode is available — readings stay on your LAN, MQTT runs against your broker, no Envora cloud account required.
Can I use Home Assistant?
Yes. First-class Home Assistant support, every channel exposed as a sensor entity. Auto-discovery via MQTT or manual via REST.
Is it calibrated?
Yes — factory calibrated against reference instruments, shipped with a signed calibration certificate per serial number.
Is my data sold?
No. Envora sells hardware. Your readings are the point of the product, not the business model.
From every angle

Built to instrument tolerances. Quiet enough for a bedroom.

Designed to sit where you actually spend time — on the kitchen shelf, the bedside table, the studio desk — and stay out of the way until something needs your attention.

Envora One on a wooden desk beside a laptop, indoor ambience
On the desk

Halo indicator

A diffused ring glows the colour of the dominant alert — or stays off. Whisper-quiet, even at peak sampling.

USB-C cable being plugged into the Envora One
USB-C

One cable. Everywhere.

5 V in, 200–500 mA typical. A 1.5 m braided cable is in the box; any USB-C adaptor brings it online.

What it senses

Eleven channels, one score

Particles, gases, climate, light, sound — all fused into a single, drift-compensated IAQ reading.

In the box

Everything you need. Nothing you don't.

Unwrap it, plug it in, pair it. The onboarding runs in 60 seconds — no hubs, no extra bridges, no dongles.

  • Envora One device
    Anodised aluminium chassis
  • Braided USB-C cable
    1.5 m · durable · pass-through
  • USB-C power adapter
    5 V · 1 A · EU / UK / US pin options
  • Calibration certificate
    Per serial number, signed PDF
  • Quick-start card
    60-second onboarding
  • Desk / wall mount
    Sold separately — £19
Envora One with USB-C cable — plug and play setup
Replaces

One Envora One. Or a shelf of point instruments.

Why own four or five single-metric monitors when one device gives you all eleven channels — and keeps the numbers consistent across every room?

The old way
  • CO₂ monitor (NDIR) £180
  • Low-level CO tracker £90
  • PM2.5 monitor £120
  • VOC / IAQ meter £150
  • Hygrometer £20
  • Barometer £40
  • Lux meter £90
  • Sound level indicator £80
  • Total £770 · 8 devices · 0 dashboards
The Envora way
£249 £770
  • One quietly designed device
  • Consistent calibration across rooms
  • One app, one dashboard, one API
  • Alerts, history, export — free for homes
Sensors

All eleven at a glance.

ppm
Carbon Dioxide
The breath signal. How fresh is the air you are in?
ppm
Carbon Monoxide
Low-level exposure, tracked over time.
µg/m³
Particulate Matter
See what you breathe. Down to one micrometre.
°C · %RH
Temperature & Humidity
Comfort is a range, not a number.
hPa
Barometric Pressure
Weather, altitude, storms — all in one number.
index
VOC & IAQ Index
Every gas. Every particle. One honest score.
dBA
Sound Level
The ambient floor, measured — never recorded.
lx
Ambient Light
Your circadian signal, measured.
Specification

Everything. Written out.

Full technical detail. If you read spec sheets before you buy, we want you to find what you need on the first scroll.

Hardware
Dimensions
92 × 92 × 36 mm
Weight
180 g
Materials
Anodised aluminium (6063-T6) · recycled PC base
Finish
Graphite · Mist
Indicator
Diffused 24-LED halo · 16 M colours
Mount
Desk · wall plate (optional accessory)
Electronics & connectivity
MCU
Espressif ESP32
Wi-Fi
2.4 GHz · 802.11 b/g/n
Interfaces
I²C · UART · PDM (internal)
Protocols
HTTP / REST · MQTT · mDNS
Firmware
OTA updates · signed
Security
TLS 1.3 · X.509 device certificates
Power & sampling
Input
USB-C · 5 V
Current
200–500 mA typical
Cable
1.5 m braided · included
Adapter
5 W · EU / UK / US pins
Sampling
1–60 s configurable per channel
Averaging
1 min · 15 min · 1 h · 8 h · 24 h windows
Sensors (summary)
CO₂
NDIR · 400–5,000 ppm · ±(50 ppm + 5%)
CO (low-level)
Electrochemical · 0–10 ppm · ~±2 ppm
Particulates
Laser scattering · PM1/2.5/10 · 0–1,000 µg/m³ · ±10%
VOC / IAQ
Bosch BME690 · fused IAQ index 0–500
Temp · humidity
BME690 · −40 to 85 °C · ±1 °C · ±3 %RH
Pressure
BME690 · 300–1,100 hPa · ±1 hPa
Sound
Digital MEMS · A-weighted envelope
Light
Photopic · 0.01 lx to daylight

2-year warranty

Covers hardware, sensor drift outside stated accuracy, and continued firmware support. Extendable to 4 years.

30-day returns

Change your mind — we take it back. Pre-paid return label included in every box.

Certified per device

Every unit ships with a signed calibration certificate tied to its serial number.
FAQ

Envora One FAQ.

The six most-asked questions about Envora One — accuracy, subscriptions, integrations, suitability.

Is Envora One accurate?
Yes. Every Envora One is bench-calibrated against reference instruments before dispatch and ships with a signed calibration certificate per serial number. CO₂ is NDIR-grade (±30 ppm + 3% of reading), PM is laser-scattering with size-binning (±10 µg/m³ or 10% of reading), VOC and humidity are research-grade chip sensors with documented drift envelopes. Firmware applies factory baselines plus user-configurable zeroing where appropriate.

Does Envora One need a subscription?
No, for personal household use. Live readings, alerts, dashboards, app and web access, history (3-year rolling), firmware updates and integrations are all included for the life of the device. Organisations pay Envora Fleet — per managed device — when they need multi-site, users, audit, SSO and reports.

Does Envora One work with Home Assistant?
Yes — first-class Home Assistant support from day one. Every measurement is exposed as a sensor entity, either via MQTT auto-discovery against your existing broker or via the REST API. Local-only mode means the integration works with no Envora cloud account.

Can I export Envora One data?
Yes. CSV export from the dashboard, REST API for current and historical data, MQTT for live streaming, and webhooks for event-triggered workflows. Your readings are yours — no rate limits for personal household use.

What sensors does Envora One include?
Eleven measurement channels: CO₂ (NDIR), CO (electrochemical), PM1/PM2.5/PM10 (laser scattering), VOC/IAQ (metal-oxide), temperature, humidity, atmospheric pressure, ambient light (lux), and sound level (dBA). All channels stream simultaneously into one fused IAQ score, with raw values exposed in the API.

Is Envora One suitable for bedrooms, kitchens, classrooms and offices?
Yes. The fan is whisper-quiet (rated for bedroom placement at any sampling rate), the chassis is solid anodised aluminium that earns its place on a kitchen counter, and the dashboard works equally well for a single bedroom or a 200-unit estate. See our schools, landlord and office solutions for room-specific guidance.
Buy Envora One

Buy a unit. Free across the UK + EU.

£249, one-time + VAT at checkout. Free for homes — no subscription, no paywall on safety alerts. Calibration certificate before dispatch. Free UK & EU shipping.

Buy Envora One — £249 See pricing

Free UK & EU shipping · 2-year warranty · Reply within one UK business day.