Our Mission and Objectives
The Szélessáv Public Benefit Foundation was established in 2007 with the aim of supporting initiatives and developments that help individuals, communities and organisations make effective use of digital technologies and the opportunities provided by the internet.
The Foundation places particular emphasis on education, information services and open technology solutions related to broadband internet. We consider it important to reduce technical barriers, improve digital literacy and promote safe internet use.
Since 2014, environmental protection, energy efficiency and sustainable development have played an increasingly important role in our work. Our objective is to create free and open-source solutions that can reduce the energy consumption of buildings and contribute to healthier, more comfortable and more sustainable living environments.
We focus particularly on the intelligent control of heating and cooling systems, which account for a significant proportion of residential energy use, as well as automated shading, occupancy-based control and other energy-efficient smart home solutions.
Foundation Details
Name of the Foundation:
Szélessáv Public Benefit Foundation
Legal representative:
Attila Tóth, Chairman of the Board of Trustees, acting independently
Registered office:
1137 Budapest, Pozsonyi út 9. I/1., Hungary
Bank account:
MagNet Bank – 16200209-17072588
Tax number:
18125878-1-41
Hungarian Register of Civil Organisations
Our Main Programmes
Szélessáv Smart Home
Szélessáv Smart Home is the Foundation’s free and open-source smart home system, with a primary focus on energy efficiency.
The system can be installed on OpenWrt-based routers and is built on the Domoticz home automation platform. We extend it with our own modules and control solutions, making it suitable for both simple and complex building automation tasks.
The system can be used for room-by-room heating and cooling control, coordinated operation of heat pumps and other heat sources, occupancy-based control, automated shading, energy monitoring and intelligent irrigation control.
Dual heat source control allows the system to coordinate different heat generators, such as heat pumps, gas boilers or electric heating systems. The objective is to use the most economical and suitable solution under the current operating conditions.
Dew point-based cooling control uses room temperature and humidity data to help prevent condensation. This is particularly important in surface cooling systems, where inadequate control may cause moisture and damage to building structures.
Automated shutter and shading control can reduce summer overheating and air-conditioning energy consumption based on solar radiation, outdoor temperature, room conditions and the presence of occupants.
Learn more about the Szélessáv Smart Home system
Szélessávindex Internet Speed Test
Internet access has become an essential part of everyday life, work, education, access to information and communication. It is therefore important that users can easily check the speed and quality of their internet connection.
Szélessávindex is a browser-based internet speed test application that allows users to check their download and upload speeds without installing additional software.
Test your internet connection with Szélessávindex
Hungarian Broadband Search Portal
Since its establishment, the Szélessáv Public Benefit Foundation has considered it important to support the spread of broadband internet access in Hungary and to make available services easier to compare.
For this purpose, the Foundation created the Szélessávkereső portal and the search system supporting its operation. The service helped users review internet services, providers and technologies available at a given address by entering a postcode and street name.
Szélessávkereső is one of the Foundation’s earlier information programmes related to broadband internet access.
Open the Szélessávkereső portal