Mann lächelt und hält Autoschlüssel neben geparktem Wagen vor Wohnhaus

Key Ring Remote Control – Alarm

You can also activate and deactivate your alarm mode without the app. Do it easily with the smart key ring remote control – alarm.

Key ring remote control – alarm

Activate and deactivate the alarm at the press of a button.

You come home late at night in the dark and want to get into the house quickly - if only it weren't for the alarm mode being activated. No problem with Homematic IP: With the key ring remote control, you can activate and deactivate both alarm functions from inside the car. The button is located within easy reach on the key ring so that you'll press it quickly and instinctively. The alarm mode can also be reliably deactivated with the remote control switches and works, even if the Internet is down.

An ideal addition to the Homematic IP Starter Set Alarm

Activate or deactivate the alarm modes with the handy key ring remote control combined with the Starter Set Alarm.

For example, you can use the additional light button to switch the lighting in the entrance area on and off.

Practical remote control for your key ring

The small remote control fits inside any trouser pocket or on your key ring.

You can use it flexibly indoor, outdoors or in the car on your way home. If you lose the remote control while you're out and about, it can be easily blocked via the app.

Händler finden

Installationspartner finden

Coming Home Licht einrichten

Nach Hause kommen und mit Licht empfangen werden - ein schönes Gefühl. Holger zeigt Ihnen in diesem Video, wie Sie sich ein Coming Home Licht in Ihrem Smart Home einrichtet.

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!

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!

Starter set

Starter Set Alarm

Monitor your home the smart way and use the app to keep up to speed both at home and when you're out and about when an alarm is triggered. Reliably with the Starter Set Alarm.

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

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

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.

learn more

Kommen Sie herein!

Jedes Smart Home ist so einzigartig wie die Menschen darin. Statten Sie unseren Referenzprojekten einen digitalen Besuch ab, lassen Sie sich inspirieren und entdecken Sie die vielfältigen Möglichkeiten von Homematic IP.

Use Cases (field_use_cases)

Smartly renovated multi-family house

During the renovation work, the dream of a smart multi-family house equipped with more than 100 Homematic IP products became a reality.

A different kind of office

From the outside, the Gerhardt & Wiegand insurance office in Hattingen (Germany) may appear quite ordinary, but visitors quickly realise upon entering that great design and intelligent solutions are highly valued here.

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.

FAQs

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

All FAQs

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.

Service

Specialist tradespeople

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

Find a specialist tradesperson

Dealers

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

Find a dealer

Innovations, ideas, impulses: your news

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

View all news

Alle News ansehen

Use Cases (field_use_cases)

Homematic‑IP Universal Dimmereinsatz in moderner Wohnzimmerszene, rechts Produktvarianten

A real problem-solver for smart retrofitting: the Homematic IP Universal Dimmer Insert

The new universal dimmer for the Homematic IP smart home system can also be wired without a neutral conductor, making it ideal for retrofitting existing buildings.

01. September 2026

Invisible and intelligent: Compact flush-mounted switch actuators for smart retrofitting

The new Homematic IP switch actuators fit even in the smallest flush-mounted box. This turns any building into a smart home.

13. August 2026

New Energy Management features for the Homematic IP Home Control Unit

The EEBUS plugin for the Homematic IP Home Control Unit now supports the LPC and LPP functions for automatically limiting power consumption and power feed-in.

11. August 2026

Systematic security: fully integrated Homematic IP camera family now available

The new Homematic IP security cameras are part of a comprehensive smart home ecosystem. With just one app, users have access to all features and can keep an eye on their smart home at all times. Rigorous data protection and secure encryption ensure complete peace of mind.

31. July 2026

Order information

Product Name (Short)

HmIP-KRCA-2

Item Number

160741A0

EAN Code

4047976607419

Technical data

Supply voltage

1x 1.5 V LR03/micro/AAA

Current consumption

100 mA max.

Typical battery life

5 years (typical)

Degree of protection

IP20

Dimensions (W x H x D)

38 x 75 x 14 mm

Ambient temperature

-10 to 55 °C

Weight

38 g (incl. batteries)

Radio frequency

868.0-868.6 MHz/869.4-869.65 MHz

Typ. open area RF range

200 m

Function type

Remote control

Connection

Wireless

Unterstützungszeitraum für Security Updates: > 5 Jahre**

* Über den „Jetzt kaufen“-Button gelangen Sie direkt zur Produktdetailseite des jeweiligen Artikels im Onlineshop der ELV Elektronik AG. Bitte beachten Sie, dass unsere Produkte nicht ausschließlich dort angeboten werden. Homematic IP Produkte sind auch in weiteren Onlineshops, im stationären Handel und über zertifizierte Fachpartner erhältlich. Eine vollständige Übersicht finden Sie in unserer Händlersuche.

** Die eQ-3 AG garantiert für jedes Produkt einen durchgehenden Support bis fünf Jahre nach der offiziellen Abkündigung.