# Wired two-stage room regulator TECH T-3.1 black (model STT-3.1BK)

**URL:** https://aio.lv/en/product--tech-tsstt-31bk--11673458
**Data updated:** 2026-01-21 17:26 (EET)
**Category:** Home Automation
**Manufacturer:** TECH
**Manufacturer code:** TSSTT-3.1BK
**EAN:** 5902479664217
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 98.49 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 81.40 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--tech-tsstt-31bk--11673458

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.99 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

Wired two-stage room regulator TECH T-3.1 (STT-3.1BK) in black. This wall-mounted thermostat provides two-step control for room heating systems via wired connection. It is designed for regulating temperature in residential or commercial interiors, enabling basic on/off staging to maintain comfort and improve energy use. Suitable for replacing or upgrading existing wired regulators.

## Long description

Wired two-stage room regulator TECH T-3.1 black (model STT-3.1BK) is a wall-mounted thermostat designed for two-step (on/off) control of heating systems via a wired connection. The device from TECH provides basic temperature regulation for residential and commercial interiors, enabling staged switching of heating equipment to maintain set temperature levels and improve energy efficiency. The black finish and compact design make it suitable for replacing or upgrading existing wired regulators without significant changes to interior décor.
Advantages
The TECH T-3.1BK offers simple two-stage control logic that is easy to install and configure for common heating setups. Its wired connection ensures reliable signal transmission and stable operation without dependence on wireless networks. The compact wall-mounted form factor and neutral black color allow discreet integration into various interior styles. Designed for straightforward retrofit scenarios, it is compatible with typical wiring found in many residential and small commercial heating systems.
Suitable for
Residential heating systems requiring staged on/off control
Small commercial spaces such as offices, shops, and service areas
Replacing or upgrading existing wired room regulators
Basic zone control for boilers, electric heaters, or circulation pumps
Key specifications
Brand: TECH
Model: T-3.1 (STT-3.1BK)
MPN: TSSTT-3.1BK
EAN: 5902479664217
Color: Black
Mounting: Wall-mounted
Control type: Wired two-stage (on/off) regulator
How to use
Mount the regulator on an interior wall away from direct sunlight, drafts, or heat sources for accurate temperature sensing. Connect the device to the heating system wiring following the manufacturer wiring diagram and local electrical regulations; ensure power is turned off during installation. Set the control setpoint according to the required comfort level. The two-stage output will operate connected heating equipment in on/off stages to reach and maintain the set temperature. For detailed wiring and safety instructions refer to the TECH installation manual supplied with the product.
Usage recommendations
Use the TECH T-3.1BK as part of a zoned heating strategy for improved energy management. When replacing an existing wired thermostat, verify wire compatibility and terminal assignments before installation. For reliable operation, avoid mounting near ventilation outlets, radiators, or heat-generating appliances. Regularly inspect wiring and connections and follow local electrical codes for service and maintenance.

## FAQ

### How much does the Wired two-stage room regulator TECH T-3.1 cost, and is it available for purchase?

The price is 98.49 € (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 06.07.2026 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 Wired two-stage room regulator TECH T-3.1 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/11673458/66981985_large.webp