Product description

Certifications and safety: This CO alarm carries ETL Listing, meets UL2034 (the U.S. carbon monoxide alarm standard), and holds FCC approval, meeting common U.S. safety and electronic compliance requirements.

What’s in the package: The box contains the carbon monoxide alarm, a quick network guide to help with Wi‑Fi setup, basic mounting hardware, and a user manual. A clear network guide is included to walk you through app pairing steps.

Sensing technology: Inside the unit is a FIGARO TGS5141 electrochemical sensor made in Japan. Unlike lower-cost semiconductor sensors, the TGS5141 uses a solid‑state electrolyte design that maintains long‑term stability and provides a linear response across 0–5000 ppm. That stability helps reduce false alarms caused by humidity or rapid temperature changes and by nearby gas appliances.

Power and lifetime: The detector is battery powered and designed to minimize maintenance — the sensor is rated for up to 10 years of service life and the supplied battery can last up to about five years under normal conditions. A low‑battery notification warns you when it’s time to replace the power source or the alarm.

Connectivity and alerts: The alarm connects to 2.4 GHz Wi‑Fi and works with Tuya/Smart Life ecosystems to send real‑time push notifications to your phone. Follow the included network guide to link the device to the app; once paired you’ll receive remote alerts and basic self‑diagnostic information.

Installation and portability: The compact housing can be mounted on a wall or set on a tabletop for quick placement. It’s small and portable enough to take when traveling and is suitable for bedrooms, kitchens, garages, attics, hotels, RVs, and tents. A test button lets you verify the alarm and electronics at any time, and the audible alert is loud enough for household use.

Support and warranty: The product includes a two‑year limited warranty and access to lifetime technical support. If you need help with Wi‑Fi setup, app pairing, or maintenance questions, support is available through the seller/manufacturer support channels; they commit to assisting customers promptly.

Pros

FIGARO TGS5141 electrochemical sensor for stable, accurate readings
Remote push alerts via Tuya/Smart Life over 2.4 GHz Wi‑Fi
Long service life: sensor up to 10 years, battery up to 5 years

Cons

Manufacturer app can be unreliable; Tuya/Smart Life often required
Some users report integration problems with certain smart hubs
May require attention to manufacturing date for full 10‑year use

VerdictThis Heiman CO alarm combines reliable sensing hardware with modern remote notification via Tuya/Smart Life-compatible apps. The FIGARO TGS5141 electrochemical sensor offers stable, linear CO readings (0–5000 ppm) and is less prone to false triggers than cheap semiconductor sensors. On the plus side: clear real-time phone alerts over 2.4 GHz Wi‑Fi, a five-year battery life, and an expected 10-year

Reviews

rick gardner 5/5

Works well

Handy, compact unit — performs as expected.
Happy Father 2/5

Not compatible with SmartThings

Doesn’t work directly with SmartThings — you must route through another hub. Misleading compatibility claims and disappointing quality.
Mark Salvati 3/5

Garaged car test — mixed results

Paired easily with SmartLife. I ran a car in a closed garage and both units showed rising CO up to ~140 ppm, then declined once ventilated. They didn’t seem to alarm loudly during that test; I’m continuing to evaluate.
Clinton A. 1/5

Unclear functionality due to software

Hard to verify proper operation — app offers very limited configuration and there’s no clear feedback beyond LEDs. Could be fine, but it’s opaque.
pdk 1/5

Failed to detect CO in my test

Do not rely on these — mine read 0 ppm during a side‑by‑side check while a known working monitor showed 50 ppm.
SleepyBecky 5/5

As expected

Straightforward setup and no issues so far.
Jorge Hernandez 5/5

Buena calidad y fácil de configurar

Se nota buena calidad. Pulsé el reset unos segundos, la app la detectó y recibí notificaciones al instante. Muy recomendable.
alpha charlie 4/5

Solid hardware but app problems

The detectors themselves appear reliable, but the Heiman Home app wouldn’t pair on iOS or Android. I used the Tuya/Smart Life app instead; pairing was painless and they integrate with Home Assistant. Note: units I received were manufactured two years ago, so the 10‑year life ends sooner than a brand‑new unit.
Christa A Bond 5/5

Easy install, reassuring alerts

Simple to set up and connect. I get notifications while away, which gives me peace of mind.