Image Slideshow Items

  • Netatmo Smart Indoor Siren
  • Smart Indoor Siren
  • Smart Indoor Siren
  • Smart Indoor Siren
  • Smart Indoor Siren
  • Smart Indoor Siren
  • Smart Indoor Siren

Netatmo Smart Indoor Siren

3.5
9 ratings
Launch Year: 2020

Model: NIS01-US

Open selection
Price alerts

Siren price drops, every week

We check the price of every Siren in the catalog daily, and email you the drops.

Your subscription could not be saved. Please try again.
Your subscription has been successful.

Smart home deals and news, straight to your inbox

Price drops, new releases and the smart home news worth knowing.

No spam. Unsubscribe in one click.

Our review

Netatmo Smart Indoor Siren Review: A Loud Companion Alarm That Only Works Tied to the Netatmo Camera

A 110dB alarm with clever presence-simulation sounds, held back by short-range pairing to the Netatmo indoor camera and no direct smart-home integrations.

The verdict

The Netatmo Smart Indoor Siren is a companion alarm designed exclusively to pair with a Netatmo Smart Indoor Camera (Welcome), adding a loud siren and a set of presence-simulation sounds like barking dogs to scare off intruders when the camera doesn't recognize someone at home. Owners who keep it within range of the camera describe it as effective and appropriately loud, and its presence-simulation feature is a genuine differentiator over a plain alarm tone. The recurring complaint across regions is a short, sometimes unreliable wireless range back to the camera, along with the lack of any direct Alexa, Google Home or Apple HomeKit integration despite being part of a smart camera ecosystem, so it suits buyers who already own the Netatmo indoor camera and can place both devices close together.

Best for
  • Existing Netatmo Smart Indoor Camera owners
  • Small rooms or apartments where camera and siren can stay close together
  • Buyers wanting presence-simulation deterrents, not just an alarm tone
  • Battery-only, wire-free installs

Pros

  • Loud alarm rated up to 110dB
  • Distinctive presence-simulation sounds (barking, household noise) beyond a plain alarm tone
  • Vibration sensing to detect deactivation attempts
  • Battery-only installation with about 2 years of battery life, no wiring required
  • Quick app setup when placed close to the Netatmo camera

Cons

  • Short, sometimes unreliable Bluetooth range back to the Netatmo camera
  • No direct Alexa, Google Home, Apple HomeKit, Samsung SmartThings or Home Assistant integration
  • No manual on-demand trigger, only activates through the camera's own detection
  • Some buyers report faulty units or pairing failures
  • Not weather-resistant, indoor use only

Who is the Netatmo Smart Indoor Siren for?

This siren connects over Bluetooth exclusively to a Netatmo Smart Indoor Camera, it has no Wi-Fi, Z-Wave, Zigbee or Thread radio of its own and cannot be triggered independently. It runs on 4x AA batteries rated for about 2 years, so it can be placed without wiring, though it can also be wired if preferred. It fits buyers who already own a Netatmo indoor camera and want a genuinely loud alarm (rated up to 110dB) plus a distinctive extra: pre-recorded presence-simulation sounds such as barking dogs, household noise or children, designed to make the home sound occupied rather than just sounding a plain siren.

What buyers love

Owners consistently describe the alarm as loud and effective at its core job, several specifically say it's strong enough to scare off an intruder, matching its 110dB rating. The presence-simulation angle is a standout mentioned across reviews, buyers like that it can bark or simulate household activity instead of only an alarm tone. When placed close to the camera, setup through the app is generally described as quick, and long-time Netatmo ecosystem users report it working reliably alongside their other Netatmo devices. Vibration sensing to detect deactivation attempts adds a layer of tamper-deterrence some buyers specifically valued.

What to know before you buy

The most common complaint by far is wireless range and reliability: multiple reviewers across regions describe the connection to the camera dropping or being unusable if the siren isn't placed very close to the camera, which limits where it can practically go in a home. A few buyers received units that failed to pair at all or arrived faulty and needed replacement, and more than one mentioned slow or unresponsive customer support when troubleshooting. Despite being part of the Netatmo camera ecosystem (whose camera does support Apple HomeKit), the siren itself has no direct Alexa, Google Home, Apple HomeKit, Samsung SmartThings, Home Assistant or Matter integration, several reviewers specifically wished for HomeKit support given the camera has it. There's also no way to manually arm or trigger the siren on demand, it only activates through the camera's own detection logic, and it isn't weather-resistant, so it's an indoor-only device.

Is the Netatmo Smart Indoor Siren worth it?

For a household already using the Netatmo Smart Indoor Camera and looking to add a genuinely loud, distinctive deterrent in the same room, this siren does what it promises, especially with its presence-simulation sounds as a point of difference from a typical alarm. The range limitations mean it works best kept close to the camera rather than as a whole-home alarm point, and the lack of any third-party smart-home integration is a real gap for a device tied to a camera that itself supports HomeKit. Buyers should treat it strictly as a same-room Netatmo camera accessory rather than a general-purpose smart siren.

Frequently asked questions

Does the Netatmo Smart Indoor Siren work on its own?

No, it connects exclusively over Bluetooth to a Netatmo Smart Indoor Camera and is controlled by it. It cannot operate as a standalone alarm.

How loud is the Netatmo Smart Indoor Siren?

It is rated up to 110dB, and buyers consistently describe it as loud enough to act as an effective deterrent.

What is presence simulation on the Netatmo Smart Indoor Siren?

In addition to its alarm, it can play pre-recorded sounds like barking dogs, household noise or children, to make a home sound occupied and deter intruders.

Does the Netatmo Smart Indoor Siren work with Apple HomeKit or Alexa?

No, it has no direct integration with Apple HomeKit, Alexa, Google Home, Samsung SmartThings or Home Assistant. It functions only through its pairing with the Netatmo camera.

How far can the Netatmo Smart Indoor Siren be from the camera?

Buyer feedback consistently points to a short, sometimes unreliable Bluetooth range, so it works best placed in the same room as the paired Netatmo camera rather than further away.

Does the Netatmo Smart Indoor Siren need batteries?

Yes, it runs on 4x AA batteries rated for about 2 years, though it can also be wired if preferred.

At a glance

Summary

Everything this siren supports, grouped by category.

Size & Materials
5.1 × 5.1 × 1.4 in (130 × 130 × 35 mm)
Power
Wired
Connectivity
Bluetooth (Smart indoor camera required)
Sensors
Vibration
Features
Presence Simulation

Price History

Loading price history...

Price alerts

Waiting for a better price?

We check this price every day and email you when it drops, along with the rest of the week's deals.

Company
Netatmo logo

Netatmo

4.2/ 5 avg ratingFrance flagHeadquartered in France

Netatmo, part of the Legrand group, is a French smart home brand known for its weather stations, smart thermostats, indoor and outdoor cameras and door/window sensors. Its products emphasize design and privacy with local video storage, and support Apple HomeKit, Alexa and Google Home. Netatmo is popular in Europe for connected weather and climate monitoring.

Full specifications

Every spec, organized

Browse the full breakdown by category. Tap the on any row for what it means, or the for sources and documentation.

Size & Materials
Weather Resistance

NO

Dimensions

5.1 × 5.1 × 1.4 in (130 × 130 × 35 mm)

Weight

?

Power
Wired

YES

Battery Type

4x AA

Battery Life

2 years

Solar Charging

NO

Connectivity
2.4 GHz WiFi

NO

5 GHz WiFi

NO

Bluetooth

Smart indoor camera required

Z-Wave

NO

Zigbee

NO

Thread Protocol

NO

Other

NO

Integrations
Google Home

NO

Alexa

NO

Netatmo's Alexa skill covers its cameras and thermostat; the siren is triggered by the Smart Indoor Camera and is not published to Alexa on its own

Apple HomeKit

NO

Samsung SmartThings

NO

Home Assistant

?

Matter

NO

Sensors
Vibration

YES

Vibration sensors to detect deactivation attempts

Tamper

NO

Sound
Tones

?

Sound Level

110 dB

Sound Duration

?

Voice Prompts

NO

Light
Light Type

NO

Light Level

NO

Features
Presence Simulation

YES

In addition to its deafening alarm, the Smart Indoor Siren has a range of pre-recorded sounds (barking, domestic sounds, children crying, etc.) to give the impression that someone is at home to deter thieves.

Automations

YES

Full comparison table

Compare the Netatmo Smart Indoor Siren with the other 6 Sirens

All Sirens in the catalog in one table: filter by what you need, sort by price or rating, and see exactly where this one lands.

  • 6 other Sirens
  • 35 specs compared
  • 32 filters
Open the full comparison
Head to head

Netatmo Smart Indoor Siren vs the competition

View all
Netatmo

More from Netatmo

View all