# Shower control unit TECH Sterownik i-2 Plus for OpenTherm installations, supports 2 valve actuators, white

**URL:** https://aio.lv/en/product--tech-sti2pluswh--11722777
**Data updated:** 2026-03-08 11:26 (EET)
**Category:** Control Systems
**Manufacturer:** TECH
**Manufacturer code:** STI2PLUSWH
**EAN:** 5902479665061
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 424.99 €
**Prices and availability valid until:** 2026-07-13 23:59
**Price without VAT (21%):** 351.23 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--tech-sti2pluswh--11722777

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 07.07.2026 | free |
| Pickup points | 10.07.2026 | 1.99 EUR |
| Courier delivery to door | 10.07.2026 | 4.99 EUR |

## Summary description

TECH Sterownik i-2 Plus is a shower control unit designed for OpenTherm-compatible heating installations. It supports control of two valve actuators, enabling integration with boiler or HVAC systems using the OpenTherm protocol. Supplied in white, the unit is intended for centralized regulation of water flow/temperature in shower systems and for connecting actuators in residential and light-commercial setups.

## Long description

TECH Sterownik i-2 Plus is a shower control unit designed for OpenTherm-compatible heating systems. The device provides centralized regulation of shower water flow and temperature by controlling up to two valve actuators and communicating with boilers or HVAC equipment via the OpenTherm protocol. Supplied in white, the unit is suitable for residential and light-commercial installations that require coordinated actuator control and integration with an OpenTherm master.
Advantages
The controller supports two independent valve actuators, enabling separate control of hot and mixed water circuits or two shower outlets. OpenTherm compatibility allows direct communication with boilers and controllers that use the OpenTherm standard, simplifying integration and ensuring coordinated temperature regulation. The compact white enclosure is intended for installation in utility areas or service cabinets and provides a clean aesthetic that fits modern interiors.
Suitable for
 Shower systems requiring centralized actuator control
 Residential properties with OpenTherm-capable boilers or HVAC controllers
 Light-commercial facilities such as small guesthouses or fitness centers
 Installations with two valve actuators (hot/mixed or dual outlets)
Key specifications
 Compatibility: OpenTherm protocol for communication with boilers and HVAC controllers
 Actuator outputs: supports control of two valve actuators
 Application: centralized regulation of shower water flow and temperature
 Color and finish: white enclosure suitable for visible or cabinet mounting
 Intended environments: residential and light-commercial installations
How to use
Mount the control unit according to installation instructions in a dry, accessible location near the actuators and OpenTherm master device. Connect the two valve actuators to the designated outputs and link the unit to the boiler or HVAC controller using the OpenTherm interface. After electrical and communication wiring is complete, configure the OpenTherm master to recognise the actuator channels and set desired temperature or flow setpoints from the heating system controller. Regular visual inspection of connections and actuator operation is recommended after commissioning.
Usage recommendations
Use with OpenTherm-compliant boilers or controllers to ensure full functionality. Verify actuator compatibility and wiring polarity before power-up. Install the unit in a protected location away from direct moisture exposure and follow local electrical codes during installation.

## FAQ

### How much does the TECH Sterownik i-2 Plus shower control unit cost, and is it available for purchase?

The price is 424.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 9 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 07.07.2026 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 TECH Sterownik i-2 Plus shower control unit 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 TECH 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 TECH 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/11722777/67103689_large.webp