uHoo / Indoor air quality monitors

uHoo Caeli

Name: uHoo Caeli
Brand: uHoo

A plug-in, screenless nine-parameter monitor adding CO, NO2, ozone and air pressure to CO2, PM2.5, TVOC, temperature and humidity; uHoo does not name the sensing technologies.

Sources checked 2026-10-21 · 1 package

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At a glance

PM2.5 sensing

Yes

CO2, particles and gases are different quantities. One sensor does not measure all of them.

Sources · 2026-10-21

uHoo: uHoo Caeli smart air monitor product page and technical specificationsChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.uHoo: uHoo Caeli store pageChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.

Radon sensing

Keep sensor presence separate from professional test certification, local rules and interpretation of results.

Radon is not among the nine documented parameters.

Source · 2026-10-21

uHoo: uHoo Caeli smart air monitor product page and technical specificationsChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.

Numeric display on the device

A coloured indicator is not a numeric display. App readings are a separate viewing route.

The specifications list a dual RGB LED status indicator and iOS and Android apps as the user interfaces.

Source · 2026-10-21

uHoo: uHoo Caeli smart air monitor product page and technical specificationsChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.

The purchase package

Caeli (US selection)

One standard consumer monitor in the specified US selection. Optional hubs, extra sensors and commercial services are not assumed included. Box list: Caeli unit, USB-C cable, country-specific 5V/2A adapter and quick start guide. US shipping and checkout were not verified.

Sources · 2026-10-21

uHoo: uHoo Caeli store pageChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.uHoo: uHoo Caeli smart air monitor product page and technical specificationsChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.

Select: uHoo Caeli single unit with United States selected in the store country selector; not the legacy Smart Air Monitor.

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Specifications & sources

Consumer monitoring packages for US buyers. These comparisons do not certify indoor safety, diagnose health conditions or replace dedicated smoke/CO alarms or professional testing.

Open a field explanation or source for its conditions.

Documented specifications and exact purchase packages
Compare the details	Caeli (US selection)
US purchase package	uHoo Caeli single unit with United States selected in the store country selector; not the legacy Smart Air Monitor. Product & sources One standard consumer monitor in the specified US selection. Optional hubs, extra sensors and commercial services are not assumed included. Box list: Caeli unit, USB-C cable, country-specific 5V/2A adapter and quick start guide. US shipping and checkout were not verified. Sources · 2026-10-21 uHoo: uHoo Caeli store pageChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.uHoo: uHoo Caeli smart air monitor product page and technical specificationsChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.
Direct CO2 sensing Whether a dedicated CO2 sensing method is documented. Do not substitute derived eCO2 from another gas sensor for a direct CO2 measurement.	Not verified We have not verified this value. It is not a confirmed no or zero. Check the original source or ask the manufacturer if it affects your choice. uHoo lists CO2 range and accuracy but does not state whether a dedicated CO2 sensor is used. Source · 2026-10-21 uHoo: uHoo Caeli smart air monitor product page and technical specificationsChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.
CO2 method and revision The manufacturer-described CO2 sensing technology. The method alone does not establish calibrated accuracy or identical behavior between revisions.	Not verified We have not verified this value. It is not a confirmed no or zero. Check the original source or ask the manufacturer if it affects your choice. The specifications give 400 to 10,000 ppm with ±40 ppm plus 4% of the actual value but name no sensing technology. Source · 2026-10-21 uHoo: uHoo Caeli smart air monitor product page and technical specificationsChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.
PM2.5 sensing Whether a particle sensor for PM2.5 is documented. CO2, particles and gases are different quantities. One sensor does not measure all of them.	Yes Sources · 2026-10-21 uHoo: uHoo Caeli smart air monitor product page and technical specificationsChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.uHoo: uHoo Caeli store pageChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.
Radon sensing Whether the product includes a documented radon sensor. Keep sensor presence separate from professional test certification, local rules and interpretation of results.	NoRadon is not among the nine documented parameters. Source · 2026-10-21 uHoo: uHoo Caeli smart air monitor product page and technical specificationsChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.
VOC signal type The documented VOC-related output or its absence. A relative index, total-VOC estimate and compound-specific concentration are not interchangeable.	TVOCs reported in ppb (0 to 60,000); a total-VOC value, not compound-specific. Source · 2026-10-21 uHoo: uHoo Caeli smart air monitor product page and technical specificationsChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.
Temperature and humidity Whether both temperature and relative humidity sensing are documented. Use the placement and operating conditions in the manual; a shared room does not imply identical readings.	Yes Source · 2026-10-21 uHoo: uHoo Caeli smart air monitor product page and technical specificationsChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.
Numeric display on the device Whether the device itself displays numeric readings. A coloured indicator is not a numeric display. App readings are a separate viewing route.	NoThe specifications list a dual RGB LED status indicator and iOS and Android apps as the user interfaces. Source · 2026-10-21 uHoo: uHoo Caeli smart air monitor product page and technical specificationsChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.
Data connection The documented local or internet connection path. Bluetooth synchronization does not by itself provide remote access from outside the home.	Wi-Fi 6 on 2.4 and 5 GHz with Bluetooth setup; Matter and listed smart-home platforms. Sources · 2026-10-21 uHoo: uHoo Caeli smart air monitor product page and technical specificationsChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.uHoo: uHoo Caeli store pageChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.
Power and included equipment Power source and relevant package equipment. A supplied USB cable does not establish a supplied wall adapter. Battery life depends on usage and settings.	Mains-powered; USB-C cable and country-specific 5V/2A adapter are listed in the box.Select the US configuration; no battery operation is described. Source · 2026-10-21 uHoo: uHoo Caeli smart air monitor product page and technical specificationsChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.
History, export and service conditions Documented ways to view or retain data and the applicable service limits. Local readings, a cloud dashboard, export and commercial API rights are different entitlements.	Free app with live readings, alerts and history; web dashboard and health indices need the optional Guard add-on, and automations need Command.Both add-ons are included for the first 3 months only; 24 hours of local storage covers network outages. Sources · 2026-10-21 uHoo: uHoo Caeli smart air monitor product page and technical specificationsChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.uHoo: uHoo Caeli store pageChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.
Questions to check before buying	CO and NO2 readings are monitoring values; the device is not presented here as a listed carbon-monoxide alarm. US shipping is inferred only from the store's country selector; the store's Reserve Now label leaves immediate fulfillment unverified.

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