# Wired Room Thermostat TECH STF-4ZV1WH — Two-State (On/Off) for Frame Systems F-4Z v1

**URL:** https://aio.lv/en/product--tech-tsstf-4zv1wh--11867681
**Data updated:** 2026-03-09 17:44 (EET)
**Category:** Smart Sensors
**Manufacturer:** TECH
**Manufacturer code:** TSSTF-4ZV1WH
**EAN:** 5902479664118
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 109.99 €
**Prices and availability valid until:** 2026-07-13 23:59
**Price without VAT (21%):** 90.90 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--tech-tsstf-4zv1wh--11867681

## 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

Wired room thermostat TECH STF-4ZV1WH is a two-state (on/off) temperature controller designed for frame systems F-4Z v1. It provides basic room temperature regulation via a wired connection and is suitable for heating and cooling setups that require simple binary control. Typical use cases include residential and commercial rooms where reliable on/off switching of HVAC or boiler circuits is needed.

## Long description

Wired room thermostat TECH STF-4ZV1WH is a two-state (on/off) temperature controller designed for installation in frame systems F-4Z v1. The device provides reliable basic room temperature regulation through a wired connection and is intended for systems that require simple binary control of heating or cooling equipment. The thermostat supports direct switching of HVAC or boiler circuits and is suitable where straightforward on/off control and compatibility with standard F-4Z v1 frames are required.
Advantages
The thermostat offers uncomplicated on/off temperature regulation with a compact form factor for flush mounting in frame systems F-4Z v1. Its wired connection ensures stable communication with the heating or cooling control circuit and reduces interference risks compared with wireless units. The device design prioritizes straightforward operation and easy integration into existing wiring infrastructures for residential and commercial applications.
Suitable for
 Residential rooms with radiator or boiler-based heating
 Commercial offices and small retail spaces requiring basic climate control
 Systems where binary (on/off) control of heating or cooling equipment is sufficient
 Installations using frame system F-4Z v1 for consistent mounting and appearance
Key specifications
 Control type: two-state (on/off) temperature control
 Mounting: flush installation in compatible F-4Z v1 frames
 Connection: wired electrical interface for direct switching of control circuits
 Application: suitable for heating and cooling systems needing binary control
 Compatibility: designed to fit standard frame system F-4Z v1
How to use
Install the thermostat into an F-4Z v1 frame following electrical safety standards and local wiring codes. Connect the unit to the control circuit of the heating or cooling equipment according to the system wiring diagram, ensuring power is isolated during installation. After wiring, set the desired temperature using the device controls and verify that the thermostat switches the heating or cooling circuit on and off at the set point. Regularly check connections and operation as part of routine system maintenance.
Usage recommendations
Place the thermostat on an interior wall away from direct sunlight, drafts, heat sources, or doors to ensure accurate room temperature measurement. Use the wired connection to maintain reliable switching performance and follow the manufacturer's installation instructions and local electrical regulations. For improved temperature stability, avoid installing the thermostat near appliances or ventilation outlets that distort ambient temperature readings.

## FAQ

### How much does the TECH STF-4ZV1WH Wired Two-State Room Thermostat cost, and is it available for purchase?

The price is 109.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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 STF-4ZV1WH Wired Two-State Room Thermostat 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/11867681/67274011_large.webp