# Room controller TECH ST-280 with RS communication, black

**URL:** https://aio.lv/en/product--tech-st280bk--11867840
**Data updated:** 2026-03-09 17:44 (EET)
**Category:** Control Systems
**Manufacturer:** TECH
**Manufacturer code:** ST280BK
**EAN:** 5902479660325
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

TECH ST-280 is a room controller designed for temperature and environment management with RS communication interface. The compact wall-mounted unit (black) provides connectivity via RS protocol for integration with building automation or HVAC systems. Suitable for residential and commercial spaces where centralized control and remote communication with controllers or gateways is required.

## Long description

TECH ST-280 is a compact wall-mounted room controller in black, designed to monitor and control temperature and environmental settings in residential and commercial interiors. The unit provides RS communication to integrate with building automation and HVAC systems, enabling centralized control and remote data exchange. Its minimalist design suits various interior styles while offering the functional connectivity needed for modern control networks.
Advantages
The controller combines a space-saving form factor with RS communication for reliable data transfer and system integration. Built for straightforward installation, the device supports centralized monitoring and remote control when connected to compatible controllers or gateways. Its black finish minimizes visual impact in interiors and the design focuses on practical operation without unnecessary complexity.
Suitable for (tasks / use cases)
Integration into building automation systems for temperature regulation
Local room climate control in offices, hotel rooms and apartments
Connecting to HVAC controllers or gateways via RS communication
Retrofit projects where a compact wall-mounted controller is required
Key specifications
Form factor: compact wall-mounted unit in black finish
Primary function: room temperature and environment control
Communication interface: RS protocol for serial communication
Compatibility: designed for integration with HVAC and building automation systems
Installation: surface-mounted on standard wall boxes or flat surfaces
How to use
Install the controller on a suitable wall location avoiding direct sunlight or drafts to ensure accurate temperature sensing. Connect the RS communication wiring to the building automation network or HVAC controllers following the system wiring diagram and local electrical codes. Configure the controller parameters via the connected gateway or controller to assign room setpoints and control modes. After commissioning, use the central system or local controls to monitor and adjust room conditions as required.
Usage recommendations
Place the unit at typical occupant height and away from heat sources for representative readings. Verify RS wiring polarity and termination in longer runs to maintain reliable communication. Regularly check connections and perform firmware or system updates through the gateway or controller when available.

## FAQ

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. 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

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