Product description

Temperature control such
as you expect

Minimalist design, operational reliability and safety - these are the main advantages of the new Euroster 4020 temperature regulator. Two temperatures are placed on the large, backlit screen: the set and the current one. The controller effectively stabilizes the room temperature at the desired level, ensuring user comfort and real energy savings. A number of useful additional functions increase the attractiveness and versatility of the controller application both in households and in public utility rooms. The regulator has a function of limiting temperature regulation by unauthorized persons.

Intelligent PWN function

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

Well thought-out software

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

Universal operating modes

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



  • an easy-to-use temperature controller that allows easy temperature control in living and utility rooms,
  • used to control the operation of a boiler, pump or other heating device,
  • function of temporary reduction of the set temperature,
  • controller lock with any 3-digit code,
  • the ability to work in one of the three operating modes:
    • room temperature control mode
    • floor temperature regulation mode
    • room temperature control mode with floor temperature limitation
  • hysteresis set in the range from 0.2 ° C to 10 ° C or PWM regulation,
  • simultaneous display of the current and set temperature on the screen,
  • temperature setting and reading with an accuracy of 0.1 ° C,
  • legible backlit LCD display,
  • the function of switching off the regulator after the heating season,
  • signaling of discharged batteries,
  • correction of temperature indications,
  • surface mounting.


EUROSTER 4020 – deklaracja zgodności.pdf
EUROSTER 4020 - user manual.pdf
EUROSTER 4020 - catalog card.pdf
EUROSTER 4020 - руководство пользователя.pdf
EUROSTER 4020 – instrukcja obsługi.pdf
EUROSTER 4020 – karta katalogowa.pdf

Technical data

Euroster 4020

Device controlled heating / air conditioning systems
Supply voltage 3V - 2 AAA alkaline batteries
Maximum load 5 A 250 V 50 Hz
Regulator output relay, voltage free, SPST (NO)
Temperature measuring range from 0 ° C to + 99 ° C
Temperature control range + 5 ° C to + 35 ° C / + 5 ° C to + 90 ° C in floor temperature measurement mode
Accuracy of temperature indication adjustment 0.1 ° C
Hysteresis range 0.2 ° C to 10 ° C in 0.1 ° C steps or PWM mode
Working temperature from + 5 ° C to + 45 ° C
Storage temperature -10 ° C to + 50 ° C
Level of security IP 20
Colour white / gray
Mounting method wall-mounted, wall plugs or Ø 60 mm flush-mounted box
Weight of the regulator without batteries 125 g
Standards, approvals, certificates compliance with EMC, LVD, RoHS directives
Temperature regulator class IV
Contribution to energy efficiency 2% (PWM mode)
Guarantee period 2 years
Dimensions (width / height / depth) mm 102/97/26
Regulator equipment Euroster 4020 temperature controller, wall plugs, batteries, manual

service with warranty


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