# Wireless thermostat Euroster E4040 TXRXG black — room temperature regulator, model E4040TXRXGB

**URL:** https://aio.lv/en/product--euroster-eue4040txrxgb--11867755
**Data updated:** 2026-03-09 17:44 (EET)
**Category:** Home Automation
**Manufacturer:** Euroster
**Manufacturer code:** EUE4040TXRXGB
**EAN:** 5903240978540
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 127.49 €
**Prices and availability valid until:** 2026-07-23 23:59
**Price without VAT (21%):** 105.36 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--euroster-eue4040txrxgb--11867755

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.07.2026 | free |
| Pickup points | 17.07.2026 | 1.89 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

Euroster wireless thermostat E4040 TXRXG (black) is a room temperature regulator designed for controlling heating systems and boilers. The kit includes a transmitter and receiver for wireless communication, enabling remote setpoint adjustment and temperature control. Suitable for apartments and single-family homes to maintain comfortable indoor temperature and manage heating schedules.

## Long description

Euroster wireless thermostat E4040 TXRXG black is a room temperature regulator designed to control residential heating systems and boilers. The kit contains a battery-powered wall-mounted transmitter (thermostat) and a compact receiver that connects to a boiler or actuator. Wireless communication between transmitter and receiver allows remote adjustment of the setpoint and automatic switching of the heating circuit to maintain the programmed temperature. The device is intended for apartments and single-family homes where flexible temperature control and simple installation are required.
Advantages
The wireless configuration eliminates the need for running control wires, simplifying installation and reducing installation time. Clear display and intuitive controls enable straightforward setpoint changes and programming of basic schedules. The black finish integrates with modern interior designs while providing functional feedback on current and target temperatures. Low-power electronics and sleep modes extend battery life in the transmitter, and the receiver features standard relay outputs for compatibility with most gas, oil or electric boilers and central heating actuators.
Suitable for
 Controlling a domestic boiler or central heating zone in apartments
 Retrofit projects where running new wiring is difficult or costly
 Single-family homes seeking simple wireless room temperature control
 Rooms that require independent temperature setpoints (living rooms, bedrooms)
Key specifications
 Wireless transmitter and receiver kit for room temperature regulation
 Room-mounted battery-powered thermostat (wall or surface mounting)
 Receiver with mains power input and relay output for boiler/actuator control
 Adjustable temperature setpoint with built-in temperature sensor in transmitter
 Range suitable for standard residential distances between rooms and boiler room
 Compact receiver housing for mounting near the boiler or control panel
 Simple programming of basic schedules and manual setpoint changes
How to use
Mount the transmitter on an interior room wall away from direct sunlight, drafts and heat sources to ensure accurate ambient temperature sensing. Install the receiver close to the boiler or heating actuator, connect it to the mains supply and to the boiler control input following the wiring diagram provided by the manufacturer. Pair the transmitter and receiver according to the included instructions, then set the desired temperature on the thermostat display. The receiver will switch the heating system on or off based on the transmitter’s setpoint and measured room temperature.
Usage recommendations
For reliable operation, place the transmitter at typical breathing height (about 1.2–1.5 m) and avoid mounting inside cupboards or behind curtains. Replace transmitter batteries promptly when low-battery indication appears, and verify signal integrity if the receiver is placed through multiple walls. Use the thermostat’s schedule and manual modes to balance comfort and energy savings.

## FAQ

### How much does the Euroster wireless thermostat E4040 TXRXG cost, and is it available for purchase?

The price is 127.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 5 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 14.07.2026 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, Installment. All transactions are 100% secure and encrypted.

### Can Euroster wireless thermostat E4040 TXRXG be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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

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