Weather sensor – pro

Keep an eye on the weather at home via the app, and connect various functions of your smart home with the weather sensor - pro.

Weather sensor – pro

All the weather data at a click.

The weather changes in a flash, the clouds close in, it gets dark - a summer storm's coming. If your awning is extended when that happens, you can only hope that it will survive the storm undamaged. With Homematic IP, you no longer have to worry about this nightmare. The weather sensor - pro reliably records all weather data such as temperature, wind, rain and humidity. Combine it with other Homematic IP devices to control your smart home even more smartly. 

Handy mit Wetterdaten

Keeping an eye on the weather data

You can see all the measured values in the Homematic IP app.

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The weather sensor provides a reliable and exact measurement of the temperature, humidity, wind direction, onset of rain, rainfall volume, brightness (relative) as well as hours of sunshine.

Haken mit Funkwellen

Simple installation

Mount the weather sensor quickly and easily outdoors at your desired location with the robust stainless steel mast.

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The anchors and screws for wall mounting are included.

Homematic IP Zeichen mit Verbindungen

Smart combinations

The intelligent storm protection prevents damage to your smart home.

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When used in conjunction with the Homematic IP shutter actuators (e.g. HmIP-FROLL) for example, your awning is retracted automatically as soon as the weather sensor detects the onset of rain or strong wind.

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.

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

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Deter burglars

Homematic IP Alarmsirene außen an Hauswand
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Use the app

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Understand our products

Test
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05. July 2023

Travel with a safe feeling: How to protect your home with smart home technology

No one there to look after the house during the holidays? No problem, because your Smart Home protects itself: It keeps burglars away and lets you know immediately if something should happen.

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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.

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-SWO-PR
Item Number
151821A0
EAN Code
4047976518210

Technical data

Supply voltage
3x 1.5 V LR6/Mignon/AA
Typical battery life
2 years (typical)
Dimensions (W x H x D)
40 x 65 x 15 cm (not incl. mast)
Dimensions stainless steel pole (Ø x H)
1.58 m x 25 mm
Weight
1417 g (including batteries)
Radio frequency
868.0-868.6 MHz/869.4-869.65 MHz
Typ. open area RF range
400 m
Measuring range brightness (relative)
0 to 100,000
Measuring range humidity
1 to 99 %
Rainfall measuring range
0 to 966 mm
Measuring range temperature
-20 to +55 °C
Measuring range wind speed
0 to 200 km/h
Measuring range wind direction
0 to 355°
Measuring range wind direction fluctuation width
0 to ±146.25° C
Function type
Weather sensor
Connection
Wireless
Color
silver
Homematic IP User Guide

Version: July 2025

20.99 MB
Overview of Homematic IP QR Code Stickers
50.09 KB
Operating manual Weather Sensor – pro

Short description: HmIP-SWO-PR | Product reference: 151821A0

10.09 MB
Datasheet Weather Sensor – pro

Short description: HmIP-SWO-PR | Product reference: 151821A0

1.25 MB
Declaration of conformity Weather Sensor – pro

Short description: HmIP-SWO-PR | Product reference: 151821AxA

95.89 KB