Wall thermostat - basic

Keep an eye on the temperature, and ensure the smart way that your home is always properly heated. That's easy with the wall thermostat – basic.

Wall thermostat – basic

Always the right temperature

Your home is the centre point of your life – and it's where you need security and warmth. But always just right: On normal working days, at the weekend, on holiday and sometimes at night at a party. With Homematic IP you control your indoor climate exactly how you want it, at all times. You position the wall thermostat anywhere you like in the room to allow very precise measurements. The wall thermostat now passes on all commands to your radiator thermostats and you can save up to 33 % on heating costs*.

Thermostat

Comfort temperature at anytime

Control the room temperature according to your needs - at home and when you're out and about.

more

You can do this easily via the app, directly on the device or conveniently via
voice control (using Amazon Alexa or Google Assistant.

Handy mit Zahnrad und Uhr

Safe and simple installation

You can position the wall thermostat anywhere you like in the room to measure the room temperature from the right location.

more

Installation is very simple: without wiring, through battery operation and radio communication.

Sparschwein

The easy way to save heating costs and CO2 emissions

You can easily set the individual temperature curves in the Homematic IP app.

more

With up to three adjustable heating profiles and 13 changes per day, you only ever heat when you want to. The open window detection ensures that the temperature is lowered during ventilation.

Kontrollsystem

Flexible control possibilities

Use the radiator thermostat for yourself (in stand-alone mode) or as part of your smart home system.

more
  • In stand-alone mode: Manual setting and operation directly on the device. The wall thermostat passes its commands directly to the radiator thermostat (e.g. HmIP-eTRV-B) or underfloor heating controller (e.g. HmlP-FAL230-C6).
  • As part of a smart home: The Homematic IP access point and the free app form the basis of your smart home. Your radiator thermostat is integrated into it, and you can add a smart function to many devices in your home.
Icon Info 2

Controlling the product via the free smartphone app and the toll-free cloud service requires connection to the Homematic IP Access Point.

Tutorial: Setting Up Devices for Room Climate Control

In this video, learn how to set up your Homematic IP devices for room climate control! We provide a step-by-step guide on how to teach-in and configure thermostats, wall thermostats, and door/window contacts. Optimize temperature regulation in your home and take advantage of a smart system that works even without an internet connection. Discover how combining these devices can make your heating control more efficient and convenient.

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

find out more

Save energy

find out more

Use the app

find out more

Connect devices together

find out more

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

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!
find out more

Die Homematic IP App

Konfigurieren Sie in der Homematic IP App alle Einstellungen für Ihr Smart Home, steuern, regeln und überblicken Sie damit jederzeit Ihre Geräte. Es werden keine persönlichen Daten erhoben, außer der IP-Adresse.

The Homematic IP app

Configure all the settings for your smart home in the Homematic IP app, and use it to control, regulate and monitor your devices whenever you want – without providing any personal data!
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.
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.

Innovations, ideas, impulses: your news

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

View all news

Elegance meets intelligent control: the new glass series from Homematic IP
Brilliant prospects for design lovers: For the first time, eQ-3 is presenting wall-mounted push-buttons and thermostats made of high-quality glass that fit perfectly into stylish interiors. Simple operation and flexible programming make the exclusive glass product line a highlight in the smart home.
17. March 2025

* In combination with window and door contacts and depending on user behaviour, structural conditions of the building and the existing heating system.

Product Variants

Wall thermostat - basic

Order information

Product Name (Short)
HmIP-WTH-B
Item Number
154666A0
EAN Code
4047976546664

Technical data

Supply voltage
2x 1.5 V LR6/Mignon/AA
Typical battery life
5 years (typical)
Degree of protection
IP20
Dimensions (W x H x D)
85 x 85 x 22 mm
Ambient temperature
0 to 50 °C
Weight
140 g (including batteries)
Radio frequency
868.0-868.6 MHz/869.4-869.65 MHz
Typ. open area RF range
250 m

General

Homematic IP User Guide

Version: September 2024

22.77 MB
Overview of Homematic IP QR Code Stickers
50.09 KB

Operating manuals

Here you can download operating instructions for our Homematic IP products.

Operating manual Wall Thermostat – basic

Short description: HmIP-WTH-B-2 / HmIP-WTH-B-A | Product reference: 154666A0 / 160554A0

3.97 MB

Product data sheets

See our data sheets for features and technical specifications of our products.

Data sheet Wall Thermostat – basic

Short description: HmIP-WTH-B-2 /-A | Product reference: 154666A0/ 160554A0

Overviews and comparisons

With our overviews, you can quickly find the right Homematic IP product for your needs.

Comparison of Homematic IP Wall Thermostats

Version V2.5 (09/2024)

283.91 KB
Compatibility between push-to-pair products
685.88 KB

Declarations of conformity

All EU declarations of conformity for download.

Declaration of conformity Wall Thermostat – basic

Short description: HmIP-WTH-B | Product reference: 154666AxA

40.54 KB
Declaration of conformity Wall thermostat – basic

Short description: HmIP-WTH-B-2 | Product reference: 154666AxC

128.25 KB