Moderne Terrasse am Haus mit Sitzgruppe, Rasen und hohen Pflanzen im Sonnenlicht

Alarm Siren – outdoor

Get a loud acoustic signal when someone tries to enter your home without permission. Install the smart outdoor alarm siren, and you’ll be able to keep an eye on everything via the app.

Alarm siren – outdoor

The secure solution for outdoor protection.

No matter what happens, you can retreat into your home and feel at ease. But sometimes we fear for this place – if we find ourselves at night, or there is a spate of burglaries in our area. So that you can still sleep easy, Homematic IP reduces to a minimum the risk of a burglary going unnoticed. The siren frightens off burglars by giving a visual and acoustic alarm. This will alert not only you but the entire neighbourhood, including any passers-by.

Haus mit Schutzschild

A secure home

For even greater security, 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 100 dB acoustic signal and a very bright LED signal light.

Handy mit Auge

Everything in view

At the same time, the app informs you via push message if something is wrong at 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.

Haken mit Funkwellen

No wiring means flexible installation

Install the alarm siren wherever you choose, for instance in a spot that’s clearly visible from the street and out of reach of a burglar.

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Solar cell operation and a weatherproof housing (IP44) mean you can install it in any outdoor location. In an emergency, the integrated tamper contact reports any tampering or disassembly, further increasing security.

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.

Solarplatte mit Sonne

Sustainable power supply

The siren is particularly low maintenance and independent of mains power, as it is supplied with power autonomously and sustainably via a powerful solar cell.

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Enough energy is stored in three NiMH rechargeable batteries for reliable operation even at night or on cloudy days. If necessary, you can recharge the battery pack via the micro USB port.

360 Grad 3D

Our products in a new dimension.

Rotate the product in all directions, zoom in and experience it in three dimensions. This gives you a detailed picture of your favourite products.

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 access

Schlüssel und schwarzer Funksender hängen an einer Garderobenleiste an der Wand.
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Deter burglars

Modernes weißes Haus mit Fenster, Schiebetür und Außenlampen am Weg
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Use the app

Lächelnder Mann hält Smartphone und gelbe Flasche in Wohnzimmer, unscharfer Hintergrund.
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Understand our products

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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. 

Person auf Sofa hält Smartphone mit geöffneter Homematic-IP App, gemütliches Wohnzimmer.

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.

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.

Installateur Suche

Specialist tradespeople

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

Händler Suche

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-O
Item Number
153208A0
EAN Code
4047976532087

Technical data

Supply voltage
Solar cell + battery pack, NiMH, 3.6 V, 1200 mAh (3x 1.2 V HR6/Mignon/AA)
Current consumption
500 mA max.
Degree of protection
IP44
Dimensions (W x H x D)
110 x 230 x 87 mm
Ambient temperature
-20 to +50 °C
Weight
755 g (including battery)
Radio frequency
868.0-868.6 MHz/869.4-869.65 MHz
Typ. open area RF range
300 m
Volume piezo speaker
100 dB (at a distance of 1 meter)
Other
External load voltage: 5 VDC/500 mA
Function type
Alarm siren / smoke detector
Connection
Wireless
Homematic IP User Guide

Version: July 2025

20.99 MB
Overview of QR code stickers
1.46 MB
Operating manual Alarm Siren – outdoor

Short description: HmIP-ASIR-O | Product reference: 153208A0

3.63 MB
Datasheet Alarm Siren – outdoor

Short description: HmIP-ASIR-O | Product reference: 153208A0

2.15 MB
Declaration of conformity Alarm Siren – outdoor

Short description: HmIP-ASIR-O | Product reference: 153208AxA

96.37 KB