Terrestream for business
Twelve signals from one premium sensor. A live dashboard across every building, floor, and zone. Named outdoor data. Local-first integrations with no cloud lock-in. Built for facilities, EHS, workplace, and ESG teams.
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339 $ CA one-time hardware. A real free tier. Per-sensor fleet pricing when you scale.
Contexte de déploiement au Canada Prix affichés en CAD avec livraison au Canada, documentation FCC/ISED et taxes applicables calculées au paiement.
Built for the teams accountable for indoor air
Why buildings standardize on Terrestream
Every signal traces to a named premium component with a public datasheet. The core is the Sensirion SEN66. Bosch BMP390L adds pressure context. Texas Instruments OPT3001 adds visible-light context. We publish the datasheets and the calibration certificate.
See the measurement evidenceThe sensor runs offline. A local HTTP API and MQTT feed your BMS directly, with Home Assistant for local automation and Matter-compatible ecosystems bridged through Home Assistant. Export everything as CSV, API, or PDF. Nothing is trapped behind our cloud.
Indoor readings are set against named authoritative streams: Open-Meteo, Google Air Quality (US EPA AQI), Google Pollen, and NOAA HMS with NASA FIRMS for wildfire smoke. You see indoor versus outdoor, not a number in a vacuum.
See the named sourcesThe fleet plane
Organize sensors by building, floor, and zone. Assign roles for the account administrator, viewers, and installers. Route alerts to SMS, email, a webhook, or your ticketing system, configured per zone and silenced outside operating hours by default.
Evidence, not adjectives
Pick a scenario. The same signals tell a different story for a meeting room, a kitchen, a filtration cycle, or outdoor infiltration. Live charts, sourced to the datasheet.
C(t) = Cout + (C0 − Cout)e−ACH·t
CO2 decays toward the outdoor baseline at a rate set by air changes per hour. Watch the slope and you can tell whether a room recovers after occupancy or needs a schedule, a damper, or a use-pattern change.
Sourced to the Sensirion SEN66 datasheet and the calibration certificate.
See the full evidence, ten charts and the standards mapTrust and data ownership
SOC 2 Type II is in progress. The TOM summary, a completed security questionnaire, and an executed DPA are available on request under NDA. Single sign-on is on the roadmap.
Security overview Longevity pledge Data Processing Agreement Sub-processors
The sensor measures the parameters that RESET, WELL, and Title 24 monitoring workflows depend on. We map our signals to those frameworks and provide the exports and source links your consultant needs.
It is not an accredited reference monitor for a certification submission. The device holds no device-level accreditation, and we say so plainly. Use it for operational monitoring, trend detection, and fleet visibility, and pair it with an accredited monitor where a submission requires one.
WELL and RESET workflows
Terrestream supports the operational monitoring workflows behind WELL Performance Monitoring and RESET projects. It is not an accredited reference monitor for certification submissions.
Match CO2, PM, TVOC-index context, temperature, and humidity signals to the WELL and RESET monitoring workflows your consultant is using.
Trend rooms, zones, and floors continuously, then spot persistent out-of-band spaces before a sampling visit or occupant complaint.
Share CSV, API, scheduled PDF, source links, and the accreditation boundary statement with the project team.
For submissions that require an accredited reference instrument, pair Terrestream with that monitor and use Terrestream for continuous operations, trend detection, and fleet visibility.
Transparent pricing
339 $ CA once per sensor, the same price consumers pay. A real free tier with no subscription floor. Business plans start at 11 $ CA per sensor per month with volume discounts. No hub to buy.
Free
$0
No subscription floor. The basics on every connected sensor.
Business
From 11 $ CA / sensor / mo
Org account, building and floor and zone fleets, roles, routed alerts, 24-month retention, and exports. Annual billing available.
Volume
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Large portfolios, scoped deployment, and a tailored quote.
Annual billing saves about two months. See the full pricing and plan comparison
Budget model
Use this as a procurement starting point. Hardware and subscription math come from the public pricing tiers. The planning band is an internal occupant-time assumption, not a published savings coefficient, and should be replaced with your own finance assumptions.
Research context: productivity and air quality, including Satish/LBNL, Harvard COGfx, Fisk ventilation reviews, and Allen Healthy Buildings references already cited there. Those sources explain why indoor air can matter; they do not certify the calculator's planning band.
Business comparison
The commercial difference is less about one reading and more about exportability, local integration, and the evidence trail your facilities and security teams can inspect.
| Terrestream 339 $ CA hardware | Premium monitors varies by model | Budget meters single-purpose | |
|---|---|---|---|
| Indoor + outdoor fusion | Weather, AQI, pollen, smoke | Usually indoor-only | Sensor-dependent |
| No-subscription device floor | Standalone display + local flows | Often cloud-led | Usually device-only |
| Local / BMS path | Local HTTP API, MQTT, Home Assistant | Varies by vendor or tier | Rare |
| Published evidence | Datasheets, calibration certificate, evidence page | Product sheets vary | Sparse |
| Commercial exports | CSV, API, scheduled PDF | Usually plan-dependent | Rare |
Procurement-friendly
Before you standardize
Yes. The sensor operates standalone offline, and a local HTTP API plus MQTT keep readings and alerts flowing on your own network. The cloud dashboard is additive, not required.
You export it. Readings are available as CSV, API, or PDF at any time. There is no proprietary format holding your history hostage.
SOC 2 Type II is in progress. A TOM summary, a completed security questionnaire, and an executed DPA are available on request under NDA today. Single sign-on is on the Business roadmap; org accounts use roles with multi-factor authentication now.
Hardware is 339 $ CA once per sensor, the same price consumers pay. The Business plane starts at 11 $ CA per sensor per month with volume discounts, and annual billing saves about two months. There is no hub to buy and no setup fee. Tell us your sensor count on the quote and we will price it.
Each sensor powers from USB-C using the included UL-listed 18 W adapter, so it runs from any standard outlet, a USB power source, or a USB power bank. For buildings standardized on Power over Ethernet, a PoE to USB-C adapter works. It connects over 2.4 GHz Wi-Fi (802.11 b/g/n) and talks to our cloud over outbound HTTPS only, with no inbound ports, so it sits comfortably on a segmented or guest VLAN. If the network drops, readings and alerts continue on the local API and MQTT until it reconnects. The sensor rests on any flat surface, with wall mounting coming soon. Each sensor claims to your organization account during setup, and our team provides installation guidance and tuning for larger fleets. Sensors carry a one-year limited warranty with 30-day returns.
Local HTTP API and MQTT connect to most BMS and automation stacks. Home Assistant covers the local automation layer, and Matter-compatible platforms are bridged through Home Assistant. Alerts route to SMS, email, webhook, or your ticketing system.
It supports the monitoring workflows those programs depend on and gives your consultant the parameters, exports, and source links they need. It is not an accredited reference monitor for a certification submission. See the evidence page and our accreditation statement for the exact boundary.
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