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Reference · Terrestream Indoor Air Quality Sensor

Product Safety Warning Program

Effective June 1, 2026 · Version 1.0 · Operational reference; the Terms of Service control.

This page describes the documented product-safety warning program referenced by §4.7 of the Terms of Service for the Terrestream Indoor Air Quality Sensor (the “ Device ”) and its associated Mobile App, Web Dashboard, and onboarding flows. The Terms of Service control; this page is operational reference material only.

Important: this page is the Product Safety Warning Program, not the Vulnerability Disclosure Policy. Aerodyne’s coordinated-vulnerability-disclosure program and security-researcher safe harbor are set out in §16 of the Terms of Service and at terrestream.com/security (Appendix F).

Purpose

The Device measures indoor air quality for awareness and general informational insights. It is not a life-safety device and does not detect smoke, fire, carbon monoxide (CO), radon, or gas leaks. The Product Safety Warning Program is a documented set of practices that ensures Aerodyne’s public-facing surfaces consistently communicate this scope and its limitations, that the distinction between CO2 (which the Device measures) and CO (which the Device does not detect) is conspicuous on every relevant surface, and that AI Outputs do not adopt unqualified safety language. The program is maintained pursuant to §4.7.

The four elements of the program

The program covers four product-safety-warning surfaces. Aerodyne maintains each element on a continuous basis as product surfaces evolve.

(a) Packaging and external labeling

The Device’s retail packaging carries conspicuous text identifying the Device as an indoor air quality awareness device and stating that the Device does not detect smoke, fire, carbon monoxide (CO), radon, or gas leaks and does not replace smoke alarms, CO alarms, or a fire alarm system. The same packaging identifies the URL of the Plain Language Summary and the URL of the Terms of Service and Privacy Policy.

(b) Physical Device marking

The Device’s physical chassis carries a conspicuous not-a-life-safety-device marking and a virtual-marking URL pointing to terrestream.com/legal. The chassis also carries the patent-marking URL identified at /legal/patents and the following FCC and ISED regulatory identifications, which identify the radio transmitter module contained in the Device:

FCC Part 15 Class B host-device compliance is handled through the Supplier’s Declaration of Conformity (SDoC) pathway; compliance testing was performed by E3C and passed. The markings below identify the contained certified transmitter module.

  • Contains Transmitter Module FCC ID: 2AC7Z-ESPS3WROOM1
  • Contains Transmitter Module IC: 21098-ESPS3WROOM1

The full FCC Part 15 Class B / ISED ICES-003 Class B compliance statements, the RF exposure statement, and the bilingual operating- conditions notice are published at /legal/regulatory.

(c) Mobile App and Web Dashboard persistent UI disclaimers

Screens that display composite IAQ status or health-adjacent features carry a persistent informational-only qualifier indicating that the displayed state is informational and does not constitute a medical, diagnostic, or life-safety determination. Surfaces affected include but are not limited to:

  • the home hero (state classifier and attribution);
  • the Wellbeing-lens, Sleep-lens, Cognition-lens, and Family-lens views;
  • the Discovery tab (AI-generated insight cards);
  • the Climate tab (annual climate letter, hot-day counter, climate stripes);
  • any view that surfaces a numeric CO2 value, PM value, or composite air-quality state.

(d) Onboarding affirmative acknowledgments

During Device activation under §3.7, the Mobile App presents affirmative-acknowledgment screens for life-safety-adjacent topics, including:

  1. Not-a-life-safety-device acknowledgment. The User affirmatively acknowledges that the Device is not a life-safety device and does not detect smoke, fire, CO, radon, or gas leaks.
  2. CO2-vs-CO acknowledgment. The User affirmatively acknowledges the distinction between carbon dioxide (CO2, which the Device measures) and carbon monoxide (CO, which the Device does not detect), and that a normal CO2 reading does not mean CO is absent.
  3. Informational-only-AI acknowledgment. The User affirmatively acknowledges that AI Outputs are probabilistic and informational; they are not medical advice, not diagnostic, and not a substitute for the judgment of a qualified professional.
  4. Emergency-services acknowledgment. The User affirmatively acknowledges that in any emergency they must call 911 (US) or the local emergency number (Canada or Mexico), and that they will not call Terrestream support in lieu of emergency services.

CO2 versus CO — enforcement on every surface

The distinction between carbon dioxide (CO2) and carbon monoxide (CO) is the single most safety-consequential point of potential confusion for a User of the Device. Every Aerodyne surface that mentions CO2 in a User-facing context is required, by this program, to be unambiguous about which gas is being referenced. Aerodyne does not engage with CO measurement, detection, alerting, or inference anywhere in its product. References to “CO” in unqualified form on a User-facing surface are prohibited.

AI Outputs — no unqualified safety language

Per §4.7 and the disclosures at /legal/ai-models, AI Outputs may not use unqualified safety language — such as “safe,” “healthy,” “all clear,” “dangerous,” “unsafe,” or “toxic” — without an accompanying informational-only qualifier. This constraint applies to Discovery cards, climate letters, Wrapped narratives, and any other AI-generated text surfaced to a User.

Updates

Aerodyne updates the program description on this page as product surfaces evolve. Material changes to the program (such as the addition of a new affirmative-acknowledgment screen or the removal of a previously required surface qualifier) are notified per §20.5 where the change materially modifies User-facing safety communications.

Version history

  • June 1, 2026 · v1.0. Initial publication.

Prior versions are preserved at /legal/archive.

Cross-references