# Wired Temperature Controller Euroster E4040 for Heating and Air Conditioning Systems

**URL:** https://aio.lv/en/product--euroster-e4040--11867799
**Data updated:** 2026-03-09 17:44 (EET)
**Category:** Control Systems
**Manufacturer:** Euroster
**Manufacturer code:** E4040
**EAN:** 5903240978311
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 54.99 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 45.45 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--euroster-e4040--11867799

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.07.2026 | free |
| Pickup points | 08.07.2026 | 1.99 EUR |
| Courier delivery to door | 08.07.2026 | 4.99 EUR |

## Summary description

Wired temperature controller Euroster E4040 is designed for regulating temperature in heating and air conditioning equipment. The device provides wired connection and control of HVAC systems, allowing setpoint adjustment and temperature stabilization for boilers, heaters, and climate units. Suitable for residential and light commercial installations where reliable wired control is required.

## Long description

Wired temperature controller Euroster E4040 for Heating and Air Conditioning Systems is designed to regulate ambient and system temperatures in residential and light commercial HVAC installations. The controller provides a wired interface for stable communication with boilers, heaters and air conditioning units, allowing precise setpoint adjustment and automatic temperature stabilization. Its functionality supports straightforward integration into systems that require reliable wired control without wireless dependencies.
Advantages
The Euroster E4040 offers dependable wired connectivity, straightforward setpoint adjustment and clear temperature control logic, which together reduce temperature fluctuations and improve system response. Its design focuses on compatibility with common heating and cooling equipment, enabling predictable behavior with boilers, heaters and climate units. The controller's operation minimizes manual interventions by maintaining programmed temperature settings and protecting system components through consistent control.
Suitable for
 Residential central heating systems with wired thermostatic control
 Boiler regulation in small commercial or light industrial premises
 Integration with air conditioning and climate control units requiring a wired temperature input
 Retrofit projects where wireless options are not acceptable or available
Key specifications
 Wired connection interface for HVAC system control
 Setpoint adjustment for heating and cooling modes
 Temperature stabilization logic to reduce overshoot and undershoot
 Compatibility with boilers, heaters and climate control units
 Designed for residential and light commercial installations
How to use
Install the Euroster E4040 according to the wiring diagram provided by the system integrator or installer, connecting the controller to the boiler, heater or air conditioning unit via the appropriate terminals. Configure the desired temperature setpoint and operating mode (heating or cooling) on the device interface. After initial setup, monitor system response and adjust setpoint or control parameters if required to match comfort or process needs. Ensure power is isolated before performing wiring changes and follow local electrical codes during installation.
Usage recommendations
For reliable operation, use the controller in environments within the equipment's specified temperature and humidity ranges, apply correct wiring and grounding practices, and verify compatibility with the controlled equipment. Schedule periodic checks of sensor accuracy and wiring integrity to maintain consistent temperature control performance.

## FAQ

### How much does the Temperature Controller Euroster E4040 cost, and is it available for purchase?

The price is 54.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 28 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 03.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Euroster products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Euroster service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/11867799/67274175_large.webp