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Alarm zones

Build an alarm zone you can arm and disarm, with the sensors and detection zones you choose.

Updated September 2026

Alarm zones

An alarm zone tells you the moment something moves, or a door or window opens, while the zone is armed. It is created from the sensors you already have in the app.

A zone can sit on the dashboard for quick arming, and it can be armed and disarmed by a scene — which is what makes it practical, because nobody has to remember.

1
Setup

Open Alarms and add a zone

Go to Home, open the Alarms tab and tap the + button.

The Alarms tab with two existing alarm zones and the plus button
Existing zones, and the plus button to add one.
2
Setup

Choose the devices

Tick the sensors that belong to the zone. They are listed by room, and the counter at the top shows how many are selected.

One sensor can belong to more than one zone — a hallway sensor can be in both a night zone and an away zone.

The device list grouped by room, with sensors ticked in two rooms
Sensors are listed by room. Six selected here.
3
Extra step

Choose the detection zones

This step only appears if the zone contains a Shelly Presence or a Shelly Camera. Both can see more than one area, so the app asks which of those areas should trigger the alarm.

On a Presence, tick the radar zones you want. A dining area you walk through at night can stay out while the rest of the room stays in.

The radar zone list for a Shelly Presence, with one of two zones ticked
Presence: pick the radar zones that should trigger.

On a Camera, choose the whole view or only the motion zones you have drawn.

The camera step with Entire screen and Motion zones as the two choices
Camera: the entire view, or only your motion zones.
4
Setup

Set the active time

The period the zone is allowed to be armed. It runs all day on every day until you narrow it.

An active time interval covering every day from 00:00 to 23:59
Every day, all day, until you change it.
5
Setup

Set the notification and PIN

Write the message you want on your phone. Make it say which zone, not just that something happened — a notification reading Motion detected is useless when three zones are armed.

Set whether the zone starts armed or disarmed. Enable pin lock requires a code to disarm it, which is worth having on anything a guest can reach.

The alarm state, notification message and pin lock options
Say which zone in the message. You will thank yourself at 3am.
6
Setup

Set the arming delays

Delay arming gives you time to leave before the zone goes live. Delay alarming gives you time to disarm on the way in before the notification fires.

Without the first, arming the zone on your way out triggers it on your way out.

Delay arming set to 60 seconds and delay alarming set to 0 seconds
Sixty seconds to leave. Zero on the way in, until you want one.
7
Setup

Name it and pick a picture

Name the zone after the area, not the sensor. Workshop survives a sensor being replaced; BLU Motion 2 does not.

Then pick a picture or a colour. Red for armed and green for disarmed reads faster than any name on a dashboard.

The alarm name field and the picture and colour choices
The name is what you read on the dashboard in a hurry.
8
Test

Check the sensors and save

The last screen reports every sensor in the zone as in check, breached or offline. Read it before saving.

Offline is the one that matters. A breached sensor is usually just an open window. An offline sensor is a hole in the zone that reports nothing at all, and the zone will arm anyway.

The sensor state summary showing two breached, zero offline and four in check
Two breached, none offline. Breached is fine; offline is not.

Tips and best practices

  • Arm and disarm from a scene, not by hand. A zone that depends on someone remembering is a zone that is off when it matters.
  • Put the zone on the dashboard. An arming control two taps away gets used; one buried in a tab does not.
  • Say which zone in the notification. The message is all you get at three in the morning.
  • Test from outside. Walk the approach a stranger would take, not the one you take every day.
  • Tell the customer what it is not. A push notification is not a monitored alarm, and the difference matters if there is ever a claim.

Video tutorial

Creating an alarm zone and setting it up in the app.

Loads YouTube when you press play. Watch on YouTube

By ShellyGuide on YouTube