Schwarze Holzhauswand mit weißer Außenleuchte, im Hintergrund verschwommenes Fahrzeug.

Light sensor – outdoor

Various functions in the smart home, such as your shutters, can be intelligently controlled via the smart outdoor light sensor.

Light sensor – outdoor

Let the sun into your smart home – exactly how you like it

At midday, the sun often heats up living spaces in particular. This doesn't have to happen in your smart home: With Homematic IP, you only let in the sun when you want it. The light sensor measures the brightness outdoors and passes on the values to your shutters on request. Your shutters will be automatically lowered at a certain brightness level. For carefree enjoyment of your smart home.

Glühbirne

Keeping an eye on brightness

The sensor measures the brightness in lux in your outdoor area. You can see all measured values in the Homematic IP app.

Haken mit Funkwellen

Easy installation

Simply install the light sensor on a wall or place it on a shelf outdoors.

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The right anchors and screws are provided for uncomplicated wall mounting.

Homematic IP Zeichen mit Verbindungen

Smart combinations

The intelligent thermal protection prevents your rooms from overheating in summer thanks to automatic shading.

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In combination with the Homematic IP shutter actuators (e.g. HmIP-FROLL), your home remains cool even in bright sunshine. With Homematic IP switching actuators (e.g. HmIP-BSM), your lights are switched on automatically when it gets dark.

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 lighting

Test
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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

Test
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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!

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.

Find out more

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.

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.

Innovations, ideas, impulses: your news

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

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Order information

Product Name (Short)
HmIP-SLO
Item Number
151566A0
EAN Code
4047976515660

Technical data

Supply voltage
2x 1.5 V LR6/Mignon/AA
Current consumption
40 mA max.
Typical battery life
3 years (typical)
Dimensions (W x H x D)
52 x 65 x 34 mm
Ambient temperature
-20 to +55 °C
Weight
100 g (including batteries)
Radio frequency
868.0-868.6 MHz/869.4-869.65 MHz
Typ. open area RF range
310 m
Measuring range brightness (relative)
0.01 to 83860 lx
Function type
Sensor
Connection
Wireless
Color
white
Measurement accuracy brightness
±10 %, ±0.1 lx
Homematic IP User Guide

Version: July 2025

20.99 MB
Overview of QR code stickers
1.46 MB
Operating manual Light Sensor – outdoor

Short description: HmIP-SLO | Product reference: 151566A0

3.3 MB
Datasheet Light Sensor – outdoor

Short description: HmIP-SLO | Product reference: 151566A0

2.66 MB
Declaration of conformity Light Sensor – outdoor

Short description: HmIP-SLO | Product reference: 151566AxA, 151566AxB, 151566AxC

104.79 KB