Product description

Temperature control just the way you want it

Innovative temperature controller based on the e-paper display. Euroster 4040 SMART controls the operation of devices, making it possible to set the temperature in the room, adjusting the operation of the boiler to the lifestyle and preferences of the residents. It enables convenient heating control from one place in the house, offering a wide range of functionalities for optimal comfort and simultaneous energy savings. If you know the problem of overheated rooms in which there are children or the elderly or unnecessarily heated during your absence, then the use of the Euroster 4040 SMART controller will be an excellent solution. Euroster 4040 SMART has many innovative solutions that set technological standards in this type of device.

Intelligent PWN function

Perfect comfort through intelligent switching based on the temperature increase algorithm. Guarantee of stable temperature without hysteresis differences.

Advance heating

Implementation of the regulator's operation with a controlled heat or cooling source, guaranteeing the expected air temperature at a specified time.

Universal operating modes

A switch located in an accessible place enables switching the operating mode to heating, cooling or switching off the regulator after the heating period.

Well thought-out software

Simple, intuitive setting of basic parameters, extended with an advanced menu for specialists.



  • no cables are required between the regulator and the controlled device,
  • control using dedicated mobile applications for iOS and Android,
  • remote access using a friendly application in Polish,
  • built-in Wifi - without the need for network gateways,
  • easy-to-use temperature controller that allows easy temperature control in residential and utility rooms,
  • two-way radio communication ensures high operational reliability and resistance to interference,
  • information about the level of the radio signal and Wifi,
  • clear, backlit e-ink display,
  • two temperature levels: comfortable and reduced,
  • programming ranges with an accuracy of 0.5 hour,
  • simultaneous display of the current and set temperatures on the screen,
  • controller lock with any 4-digit code,
  • a number of useful functions: temporary temperature setting, constant temperature, holiday mode, low battery indication,
  • temperature reading with an accuracy of 0.1 ° C,
  • possibility to turn off the regulator after the heating season with the anti-freeze temperature turned on,
  • correction of temperature indications,
  • surface-mounted execution.


EUROSTER 4040 SMART app configuration step by step.pdf
EUROSTER 4040 SMART – instrukcja obsługi.pdf
EUROSTER 4040 SMART – karta katalogowa.pdf
EUROSTER 4040 SMART – deklaracja zgodności.pdf
EUROSTER 4040 SMART – instrukcja obsługi aplikacji.pdf
EUROSTER 4040 SMART - user manual.pdf

Technical data

Euroster 4040SMART

Device controlled heating / air conditioning systems
Supply voltage thermostat - 3V (2 AAA alkaline batteries) / receiver - 230 V 50 Hz
Receiver output relay, voltage free, SPST
Maximum load 5 A 230 V 50 Hz
Temperature measuring range from 0°C to +100°C
Temperature control range from +5°C to +35°C
Temperature control accuracy 0,1°C
Accuracy of temperature indications 0,1°C
Hysteresis range from 0.2 ° C to 10 ° C in 0.1 ° C steps or PWM mode
Visual signaling e-ink display
Working temperature from +5°C to +40°C
Storage temperature from -10°C to +50°C
Level of security IP20
Color white / gray
Mounting method regulator - support / receiver - socket 230 V 50 Hz
weight Controller without batteries – 115 g / receiver - 185 g
Guarantee period 2 years
Radio operating frequency 868 MHz
Maximum transmit power <25 mW
Temperature controller class IV (PWM mode)
Participation in energy efficiency 2% (PWM mode)
Wifi parameters 2.4 GHz 802.11 b/g/n, WPA and WPA2 encryption

Where to buy

You will find us easily
throughout the country

The Euroster Distributor Network is available throughout the country. Select a province from the list below and search for a Euroster distributor in your area. Do you want to become a Euroster distributor or are you our distributor and your company is not on the list? Contact us!

Customer service

tel. 65 571 15 16
Mon. - Fri: 7:00 a.m. - 4:00 p.m.


Please contact us
with our representatives

Service and support

Grzegorz Janusik
tel. 65 571 20 12

Find a distributor

Program Inteligentny Rozwój Program Regionalny Samorząd woj. wielkopolskiego UE EFRR