Alarm Siren

If someone tries to enter your home without permission, our smart alarm siren will signal this loudly and immediately. 

Alarm siren

The secure solution for indoor protection.

At night, in bed, you can hear strange noises coming from the windows. Is it the neighbour’s cat or is it a burglar? Homematic IP helps you prevent a burglar from entering your home unnoticed. If someone is detected trying to gain unauthorised entry, the alarm siren sounds loudly and clearly.

Haus mit Schutzschild

A secure home

For the best possible protection, combine the alarm siren with window and door contacts or motion detectors.

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If an intrusion is detected, the siren sounds the alarm with a loud acoustic signal and two very bright LED signal lights.

Handy mit Auge

Everything in view

The app informs you immediately via push message if something is wrong in your home.

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The Homematic IP app always gives you an up-to-date overview of your smart home – so you can feel secure even when you’re out and about.

Alarmanlage

Individual choice of alarm signals

Choose the type of alarm signal – acoustic and visual – and alarm duration you want.

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You set all the functions in the Homematic IP app. And connect the alarm siren to a Homematic IP smoke detector, too. That way, in the event of a fire, you will not only be informed by the alarm on the smoke detector but also by the alarm siren – and be twice as safe!

zwei Zahnräder

Reliable and fail-safe

The alarm siren remains active even if the Access Point is destroyed, for example by a burglar.

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The alarm is triggered even if the internet or cloud connection is inactive. With Homematic IP, this is ensured by direct communication between the devices.

Haken mit Funkwellen

No wiring means flexible installation

Install the alarm siren inconspicuously wherever you choose, ideally out of reach of a burglar.

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Its battery operation means that it can be installed in any indoor location. In an emergency, the integrated tamper contact reports any tampering or disassembly, further increasing security.

How to teach-in devices for security solution

You want to make your home safer? No problem with Homematic IP. In this video you will learn how to teach-in different devices for our smart security solution. Furthermore it explains how to activate different alarm modes and how to configurate alarms by for example changing the operating time of the siren.

Your advantages at a glance

Do you want to live more safely, save money and protect the environment, or simply increase your living comfort? There are many good reasons for a Smart Home. Find out more now!

Control heating

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Save energy

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Use the app

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Connect devices together

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Homematic IP: Smart living. Simply exciting.

Homematic IP means modern, flexible and secure technology from the European market leader*. Let the advantages of our system win you over, and start living smarter straight away. 

Homematic IP
With some smart home providers, you have to make a choice: Do you have everything wired, or do you go fully wireless? Some systems are also hermetically sealed and do not accept devices from other manufacturers. Here at Homematic IP, we have a different approach. We are guided by you!
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The Homematic IP app

Configure all settings for your smart home in the Homematic IP app, which you can use to control, regulate and monitor your devices at any time. No personal data is collected except for the IP address.

Homematic IP Wired
A smart home system is particularly robust, interference-proof and reliable when the devices communicate with each other via wired connections. And data transmission is very fast with cables, too. That all comes together with Homematic IP Wired.
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Always here for you and your queries.

Whether you have a question about a product, something isn’t working as you wanted, you’re looking for a specialist partner, or you simply want to give us feedback: we are always here to help.

FAQ

FAQs

This is where you’ll find the most important questions and our answers about our smart home solutions.

Service

Service

Have you purchased a Homematic IP product and now have questions about how it works? Our technical support team will be happy to help you.

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Specialist tradespeople

Are you looking for a good specialist tradesperson near you? Simply use the convenient search function here on our website.

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Dealers

You can get Homematic IP products and good advice all over Germany. Find the right dealer near you here.

Innovations, ideas, impulses: your news

Get first-hand news about the latest innovative smart home solutions. 

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eQ-3 presents a comprehensively expanded portfolio
eQ-3 will be presenting the upcoming highlights of its Homematic IP smart home system at Light + Building 2026The company is expanding its product range with a fully integrated alarm system, introducing a smart solution for protection against water damage and adding intelligent lighting solutions, control elements and other automation components to its range.
08. March 2026

Order information

Product Name (Short)
HmIP-ASIR-2
Item Number
153825A0
EAN Code
4047976538256

Technical data

Supply voltage
3x 1.5 V LR6/Mignon/AA
Typical battery life
2 years (typical)
Degree of protection
IP20
Ambient temperature
5 to 35 °C
Dimensions (Ø x H)
124 x 45 mm
Weight
190 g (including batteries)
Radio frequency
868.0-868.6 MHz/869.4-869.65 MHz
Typ. open area RF range
250 m
Function type
Alarm siren / smoke detector
Connection
Wireless
Color
white
Homematic IP User Guide

Version: July 2025

20.99 MB
Overview of QR code stickers
1.46 MB
Operating manual Alarm siren

Short description: HmIP-ASIR-2 | Product reference: 153825A0

3.44 MB
Data sheet Alarm Siren

Short description: HmIP-ASIR-2 | Product reference: 153825A0

1.16 MB
Konformitätserklärung Alarmsirene

Short description: HmIP-ASIR-2 | Product reference: 153825AxD

125.85 KB