# Room wireless two-state regulator TECH T-4.2 (model STT-4.2WH) white

**URL:** https://aio.lv/en/product--tech-tsstt-42wh--11867792
**Data updated:** 2026-03-09 17:44 (EET)
**Category:** Home Automation
**Manufacturer:** TECH
**Manufacturer code:** TSSTT-4.2WH
**EAN:** 5902479664613
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 67.99 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 56.19 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--tech-tsstt-42wh--11867792

## 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

Wireless room two-state regulator TECH T-4.2 (STT-4.2WH) in white is a wall-mounted thermostat device for on/off control of heating or cooling systems. As a two-state regulator it provides binary switching to maintain set conditions, suitable for residential or light commercial spaces, enabling simple temperature management and integration with compatible wireless control systems.

## Long description

The TECH T-4.2 (model STT-4.2WH) room wireless two-state regulator in white is a wall-mounted thermostat designed for on/off control of heating or cooling equipment. As a two-state regulator it switches outputs between two conditions to maintain a setpoint, enabling basic temperature control in residential and light commercial interiors. The device communicates wirelessly with compatible control systems and provides a compact, unobtrusive interface for manual setpoint adjustments.
Advantages
The unit offers simple binary switching logic for reliable temperature maintenance and straightforward installation on standard wall boxes. Its wireless connectivity reduces the need for wiring between the sensor and controller, while the white housing and compact dimensions blend with common interior finishes. The regulator supports manual setpoint control and provides a clear user interface for everyday use without complex configuration.
Suitable for
 On/off control of residential heating systems (boilers, electric heaters)
 Control of simple cooling or ventilation circuits
 Retrofit projects where wireless connectivity avoids new cabling
 Small offices, apartments, and light commercial spaces
Key specifications
 Function: two-state (binary) temperature regulator for on/off control
 Mounting: wall-mounted, fits standard electrical wall boxes
 User Interface: manual setpoint adjustment and status indicators
 Connectivity: wireless communication to compatible control units
 Housing color: white, compact design intended for indoor use
How to use
Install the regulator on a standard wall box at representative room height, avoiding direct sunlight and sources of heat such as radiators. After mounting, power and pair the device with the compatible wireless control system following the system's pairing procedure. Set the desired temperature using the regulator's controls; the device will switch the connected heating or cooling equipment on or off to reach and maintain the setpoint. Regularly check battery or power status where applicable and verify wireless connection integrity.
Usage recommendations
Place the regulator on an interior wall away from drafts and direct heat sources for accurate readings. For retrofit installations, confirm compatibility with the existing wireless control hub and follow manufacturer guidance on placement and pairing to ensure reliable on/off operation.

## FAQ

### How much does the TECH T-4.2 two-state wireless room regulator cost, and is it available for purchase?

The price is 67.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 156 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. 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 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/11867792/67274163_large.webp