Aethair devices
Thiamis
IoT Gateway for Connecting Third-Party Sensors to the Aethair Platform
Where it is used
Where Thiamis Runs
Each tile opens its solution page. Or browse the sensor catalog by instrument type: air quality and noise, water and weather. Fluid and fuel quality analyzers and I/O modules are listed under Ports and Protocols.
Perimeter and Fenceline Monitoring
A TSI DustTrak in a weatherproof box with a heated inlet reports dust at the site boundary, alongside noise and weather instruments on the same gateway, with upwind and downwind roles for the perimeter report.
Outdoor and Weather Networks
Weather stations, ambient analyzers, and near-reference particulate monitors such as the Met One E-BAM, on poles and rooftops, housed in an Aethair Node, the outdoor enclosure for Thiamis (see Hardware), reporting over 4G where there is no site network.
Water Quality and Hydrology
Sondes and level sensors beside the water, streaming live readings from sites that have never had a network.
In the catalog
More Solutions Built on Thiamis
Every solution whose recommended configuration uses Thiamis, beyond the sites above.
Agriculture & Irrigation
Soil moisture, microclimate, and frost warning
Aquaculture & Fish Farming
Dissolved oxygen, temperature, and ammonia control
Cabin Air Quality
Respirable dust, gases, and blast monitoring
Heat Stress & Outdoor Work
WBGT for worksites, athletics, and events
Hydraulic & Fuel Cleanliness
ISO 4406 oil cleanliness and aviation fuel
Hydrology, Level & Flow
Flood warning, stream gauging, and groundwater
Landfill, Biogas & Odor
Methane, H₂S, and odor complaint response
Noise Monitoring
Environmental and occupational sound levels
Occupational Safety & Industrial Hygiene
Worker exposure, confined space, and heat stress
Oil & Gas / Petrochemical
Fence-line VOC, H₂S, and methane leak detection
Weather Stations & Meteorology
Professional multi-parameter weather monitoring
Wildfire Air Monitoring
Smoke plumes, black carbon, and community exposure
What it connects
Compatible Sensors
The sensor catalog lists 28 manufacturers, 35 sensor integrations, and 224 device models today. Every one already runs on Thiamis, with monitoring, alerts, reports, and Environet dashboards working. Vendors below link to their devices; browse the whole catalog or contact us if your sensor is not listed (a new integration is typically added within a few days).
How it connects
Ports and Protocols
Every instrument connects to one of these ports, and the protocol each one uses is listed below it. The first side has the SDI-12 and RS-485 buses and the GPS and LTE antenna connectors. The second has the RS-232 MUX connector, which provides three RS-232 ports with the 3-to-1 expansion cable. The third has two USB-C ports.
In all, 224 external device models (particulate monitors, gas analyzers, weather stations, noise dosimeters, water-quality probes, and more) stream to the Aethair Cloud alongside Aethair's own devices. Each interface below lists what plugs into it. A model that supports more than one interface is listed under each, so the per-interface counts overlap. Browse all 224 or build a custom configuration.
RS-232
3 ports on ThiamisRS-485
1 port on ThiamisSDI-12
1 port on ThiamisUSB
2 ports on ThiamisWhat you get from it
What You Get From Thiamis
Every reading goes to the Aethair Cloud and appears in Environet. Each outcome below is a product you can read about.
Proven in a regulator's network
South Coast AQMD's published ozone sensor network in the San Bernardino Mountains ran on Thiamis and Environet, averaging readings at the edge and logging through connectivity outages.
Live data and alerts
Environet shows every device live and alerts the people you choose by email, SMS, and webhook, on a reading or its average over any window from 5 minutes to 30 days. The connected instrument's readings are alerted on like any Aethair device's. Noesis fills in a dashboard, a report, or an alert from a plain-text request.
Compliance reports
Aethair Reports writes scheduled or on-demand reports, as PDF or secure link, from templates for Aethair Blue, WELL v2, cabin air (ISO 23875), and the CMS-2567 healthcare codebook (ASHRAE 170), or against custom limits such as OSHA PELs, NAAQS, or EPA guidance, each on the average you define. Reports draw on a connected instrument's readings against the standard or internal program limit you choose. See a sample report.
Dashboards and the app
Environet dashboards and the Aethair App show a connected instrument's readings like any Aethair device's. The occupant-facing Aethair Dashboards status display is built around Aethair IAQ and Aethair PRO.
Your data, stored until delivered
Thiamis caches the readings of its connected sensors on the device until they are delivered, so a connectivity outage delays readings instead of dropping them, and raw readings are stored exactly as the instrument sent them. Every reading is encrypted in transit to the Aethair Cloud and platform access is role-based. Live and historical readings export as JSON or CSV through the Environet API (OpenAPI 3.2). You own your devices and data, can grant partners controlled access, and readings are kept for as long as you need them (at least two years after a project ends) and deleted only at your request.
One account for every site
Connected instruments sit next to Aethair PRO and Aethair IAQ in the same Environet account: one console, the same alerts, reports, and Environet dashboards for every device, and an existing installation is modernized without replacing the instrument.
Wind-aware perimeter sites
Mark each instrument upwind or downwind, pair a weather station on the same gateway, and Environet plots a wind rose and the upwind-to-downwind difference; the perimeter report carries both.
How it is built
Thiamis Hardware
Interfaces and protocols are listed above. All other specifications are listed below.
General
| Input voltage | 12 VDC, USB-C |
|---|---|
| Power | 4.6 W |
| Operating temperature | −30 °C to 75 °C (−22 °F to 167 °F) |
| Certifications | CE, FCC, PTCRB |
| Field housing | Aethair Node enclosure for outdoor sites (specifications on request) |
| Polling | Each connected instrument polled on a configurable interval, one minute by default |
| Updates | Firmware, instrument drivers, and configuration over the air, from Environet |
Communications
| Cellular | 4G LTE / 3G / 2G |
|---|---|
| WiFi | 802.11 b/g/n |
| Bluetooth | Bluetooth 4.0 |
| Mesh | Zigbee |
| GPS | A-GPS, sensitivity > −165 dBm, 3 m accuracy |
| Antenna | Built-in (2G/3G/4G, GPS, Zigbee, Bluetooth); external MCX female for cellular and GPS optional |
| SIM card | Built-in; cellular data included, no network fee |
On-board sensors
| Temperature | 0–45 °C, resolution 0.1 °C, maximum error ±0.5 °C from 15–30 °C |
|---|---|
| Humidity | 15–75 % RH, resolution 0.1 % RH, maximum error ±2 % RH |
| Barometer | 300–1100 hPa, resolution 0.12 Pa, maximum error ±1.3 Pa |
Source: Thiamis Technical Specifications (Rev. 1.0, January 2023).
Still deciding?
The Aethair Monitors: Aethair PRO and Aethair IAQ
Aethair PRO
Industrial monitor for indoor and outdoor sites. Built-in sensors cover the essentials, and hot-swappable gas sensor cartridges and a differential-pressure option add more.
13 built-in parameters (PM2.5, PM10, noise, temperature …), plus 19 swappable cartridges (H₂S, SO₂, NO₂, CO, O₃, CH₄ and more) in 2 gas sockets, 1 MultiSense socket, and 1 expansion socket
See Aethair PRO
Aethair IAQ
Compact plug-in monitor with every sensor built in, nothing to add. Ideal for straightforward indoor air quality monitoring.
13 built-in parameters: CO₂, PM2.5, PM10, tVOC and more
See Aethair IAQ
Article Library
Reading for Thiamis Deployments
Guides where instruments you already own come into the same account through Thiamis.
Ambient Air Quality Monitoring: What Nonattainment Changes
Ambient air quality monitoring explained: how PM2.5 attainment is measured, what a nonattainment designation triggers, and what site-level monitoring adds.
Air Quality Near Data Centers: What Communities Should Know
Air quality near data centers: construction dust, diesel generator emissions, and noise, and how communities get independent monitoring data.
Data Center Air Quality Monitoring, Inside and Out
Data center air quality monitoring for operators: ISO 14644 cleanliness in the white space, construction dust, generator emissions, and perimeter noise.
Wildfire Smoke Air Quality Monitoring: Detection & Response
Wildfire smoke monitoring for EHS and public health teams: real-time PM2.5, the AQI 151 respirator trigger, and how to alert workers before smoke arrives.
Industrial Perimeter Air Quality Monitoring: Action Levels
What industrial perimeter monitoring requires at fenceline and construction sites: DER-10 CAMP action levels, EPA fenceline rules, and continuous records.
Ozone Exposure Limits and Monitoring: OSHA and NAAQS
OSHA's ozone PEL is 0.1 ppm as an 8-hour TWA. How NIOSH, ACGIH, and the 70 ppb NAAQS compare, and why ozone needs short-interval monitoring.
Questions
Thiamis FAQ
What do I do on site to connect an instrument?
How many instruments can one Thiamis connect?
What power does Thiamis need?
How is Thiamis bought?
Connect the Sensors You Already Own
Schedule a Thiamis DemoBrowse compatible sensors Build a multi-sensor configuration Outdoor & ambient monitoring solution Choosing between Aethair PRO, Aethair IAQ, and Thiamis
A 30-minute call: you tell us about your application, then we demo the solution for it.
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