The Minut A1 alarm is Minut's smoke and carbon monoxide (CO) alarm, built for short-term rentals. It combines a certified, always-on alarm with connected features — remote monitoring, automated self-testing and real-time alerts — when it's set up in the Minut app.
The full installation manual and technical specifications are at minut.com/setup/a1-s.
Availability: the Minut A1 alarm is currently available in the US only for early-access customers.
How the Minut A1 alarm works
Always active — no Wi‑Fi or Minut plan needed:
Detects smoke (optical sensor) and CO (electrochemical sensor) and sounds a loud 85 dB local siren straight away. This can't be turned off from the app.
The alarm turns on automatically when you first attach it to its mounting bracket, which activates its 10-year alarm battery. It can't be turned off. If it's removed from the bracket, it sounds a tamper alarm.
Connected features — need Wi‑Fi and an active Minut plan:
Interconnection: link up to 10 Minut A1 alarms in the same unit (within 50 ft / 15 m of each other). If one detects smoke or CO, all linked alarms sound together. Alarms interconnect wirelessly by radio, so no cables are needed. The Minut A1 alarm only interconnects with other A1 alarms in the same unit in the Minut app, not with other brands.
Cigarette smoke detection.
Real-time alerts: push and email notifications if smoke or CO is detected.
Automated self-testing: schedule tests (for example weekly, monthly or between bookings) from Settings → Smoke & CO alarm in the app. Results are saved in the event log for your records.
Tamper alerts: you're notified if the alarm is removed from its bracket.
Indoor climate monitoring: temperature, humidity and mold risk. Readings update regularly rather than in real time.
The Minut A1 alarm has no camera or microphone, and does not record audio or video. It doesn't monitor noise levels either.
Lights and sounds
Signal | Meaning |
3 short sirens + 3 red flashes, repeating | Smoke detected |
4 short sirens + 4 red flashes every 5 s (every 60 s after 4 min) | CO detected |
3 then 4 short sirens with red flashes, two cycles | Test |
2 yellow flashes | Tamper: alarm not on its bracket |
1 short siren + 4 yellow flashes every 50 s | Low alarm battery / end of life — replace the alarm. Can't be silenced. |
1 short siren + 2 yellow flashes every 50 s | CO fault — replace the alarm |
3 short sirens + 1 yellow flash every 50 s | Smoke fault — replace the alarm |
2 short sirens + 1 yellow flash every 50 s | Smoke low sensitivity — replace the alarm |
2 short sirens + 2 yellow flashes every 50 s | Smoke high sensitivity — clean the alarm |
If smoke and CO are both present, the smoke alarm takes priority. The alarm that detected smoke or CO is the one with the blinking light.
What the Minut A1 alarm doesn't do
The Minut A1 alarm is a dedicated safety alarm, not a replacement for the Minut M3 sensor. It does not include noise monitoring, crowd/occupancy detection or an outdoor mode. Use both for full coverage: the Minut M3 sensor for noise, occupancy and climate, and the Minut A1 alarm for certified smoke and CO safety.
The Minut A1 alarm connects to Wi‑Fi on its own. It doesn't need a Minut M2 or M3 sensor or a gateway.
Batteries
Battery | What it does |
Alarm battery | Sealed and not replaceable. Powers smoke and CO detection for the alarm's full 10-year life. |
Connectivity battery | Replaceable CR123A (Panasonic CR123A or Duracell DL123A). Powers Wi‑Fi, alerts, interconnection and remote testing. Lasts about a year. The app notifies you and the alarm chirps when it's running low. |
To replace the connectivity battery:
Have a new Panasonic CR123A or Duracell DL123A ready.
Remove the alarm from its mounting bracket and open the battery cover.
Replace the old battery with the new one.
Reattach the alarm and press the button to test it.
Replacing this battery doesn't reset the 10-year alarm life.
End of life
Smoke and CO alarms have a 10-year life, counted from when the alarm is first activated. About 30 days before the end, the app and email warn you that the alarm needs replacing, and the alarm itself chirps once and flashes yellow four times every 50 seconds. This warning can't be silenced. At the end of its life the alarm must be replaced and deactivated.
Deactivating the alarm for disposal
Remove the alarm from its mounting bracket.
Tear off the "Deactivation Switch" sticker on the back.
Turn the deactivation switch to OFF with a screwdriver, in the direction of the arrow.
Deactivation is permanent: the alarm battery is drained, and the alarm can't be reactivated or remounted and no longer detects smoke or CO.
Warranty
The Minut A1 alarm has a 1-year limited hardware warranty from the date of purchase, or longer where local law requires it.
Do I need a Minut plan?
The Minut A1 alarm can be added to any existing Minut unit at no extra subscription cost.
For a unit that isn't on Minut yet, a plan is needed for the connected features. Without a plan or a network connection, the Minut A1 alarm still detects smoke and CO and sounds its local siren.
Installing the Minut A1 alarm
What you need: the Minut app (iOS/Android), Bluetooth turned on on your phone, your unit's 2.4 GHz Wi‑Fi password (5 GHz isn't supported), and a drill with a 3/16 in (5 mm) bit.
In the box: the alarm, a mounting bracket, two screws, two plastic wall plugs, one CR123A battery and a "Date of install" label.
Download the Minut app and log in, or create an account if you're new to Minut.
Mount the bracket: draw a 6 in (15 cm) horizontal line where the alarm will go, line up the bracket's two longest slots on it and mark the holes. Drill two holes with a 3/16 in (5 mm) bit, insert the wall plugs and screw the bracket on. Keep the alarm away while drilling to protect it from dust.
Insert the battery that came with the alarm. It powers the connected features only and doesn't affect the alarm itself.
Attach the alarm: twist it onto the mounting bracket clockwise until it clicks. It turns on automatically. Give it a gentle tug to check it's secure.
Finish setup in the app while staying in the same room, below the alarm. Then press the button on the alarm to test it — a successful install sounds a loud siren.
Write the install date on the "Date of install" label and stick it somewhere visible.
Test the alarm with its button at least once a week, and every time you replace the connectivity battery. Once a month, take it off the bracket and vacuum the cover and vents with a soft brush attachment.
Where to install
Indoor only. Do not install in bathrooms, porches, kitchens or anywhere exposed to condensation, water, steam or direct sunlight.
Never install outdoors.
Keep at least 5 ft (1.5 m) from any cooking appliance.
Keep away from fans, vents and windows.
The center of the ceiling gives the fastest reaction time. Stay at least 20 in (50 cm) from any corner or wall. If you mount it on a wall, keep it no more than 12 in (30 cm) below the ceiling.
On sloped or peaked ceilings, mount it 36 in (0.91 m) horizontally from the highest point.
Keep it at least 10 ft (3 m) from bathrooms with showers and 5 ft (1.5 m) from fluorescent lights.
Avoid very dusty, damp or insect-infested areas, and spaces outside 40–100 °F (4.4–37.8 °C).
In hallways longer than 40 ft (12 m), install an alarm at each end.
Placement rules vary by state, so check local requirements. As a minimum, install one alarm per floor and one in each sleeping area.
FAQs
Do I need Bluetooth to install it?
Yes. Turn on Bluetooth on your phone and the app guides you through the rest.
How do I turn it on or off?
It turns on automatically the first time you attach it to its mounting bracket. It can't be turned off; removing it from the bracket sounds a tamper alarm. The only way to switch it off is permanent deactivation at the end of its life (see Deactivating the alarm for disposal).
How do I stop the alarm when it's sounding?
Press the Test/Silence button on the alarm. A smoke alarm stays silent for up to 8 minutes and a CO alarm for up to 4 minutes; if smoke or CO is still there, it sounds again. With interconnected alarms, pressing the button on the alarm that detected smoke or CO (the one with the blinking light) silences all of them; pressing it on another alarm silences only that one.
How do I change the Wi‑Fi network?
In the Minut app, go to Homes, select the home, scroll to Devices, tap the alarm, open Advanced settings and press Update Wi‑Fi settings. Then follow the steps in the app.
Does it work with 5 GHz Wi‑Fi?
No. The Minut A1 alarm supports 2.4 GHz Wi‑Fi only.
If you need help, contact us at hello@minut.com.