# Tech Controllers I-1 Mixing Valve Controller

**URL:** https://aio.lv/en/product--oem-sti1--11444443
**Data updated:** 2026-06-17 08:21 (EEST)
**Category:** Home Automation
**Manufacturer:** OEM
**Manufacturer code:** STI1
**EAN:** 5902479661698
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 182.49 €
**Prices and availability valid until:** 2026-07-30 23:59
**Price without VAT (21%):** 150.82 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--oem-sti1--11444443

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 09.07.2026 | free |
| Pickup points | 14.07.2026 | 1.89 EUR |
| Courier delivery to door | 14.07.2026 | 4.99 EUR |

## Summary description

The Tech Controllers I-1 is a dedicated mixing valve controller designed to manage the operation of a three or four-way mixing valve. It features a weather-based control function, weekly programming, and compatibility with room regulators. This device ensures precise temperature regulation in heating systems, improving energy efficiency and comfort in residential heating installations.

## Long description

The Tech Controllers I-1 is a specialized mixing valve controller engineered to manage the operation of three or four-way mixing valves within residential heating systems. By integrating advanced control logic, this device maintains precise water temperature in the heating circuit, which directly contributes to improved energy efficiency and consistent thermal comfort throughout the home. Its design focuses on reliability and seamless integration into modern heating infrastructures.
Advantages
The primary benefit of the I-1 controller is its weather-based control capability, which automatically adjusts the valve position based on external temperature conditions to prevent overheating or underheating. The inclusion of weekly programming allows users to tailor heating schedules to their specific lifestyle, further optimizing fuel consumption. Furthermore, the device offers full compatibility with various room regulators, providing a centralized and responsive approach to managing indoor climate control.
Suitable for
Residential heating systems using three or four-way mixing valves
Hydronic underfloor heating installations
Radiator heating circuits requiring precise temperature management
Systems where weather-dependent heating control is desired
This controller may not be suitable for industrial-scale heating systems or complex multi-zone installations that require advanced cascade management or specialized communication protocols beyond the standard room regulator interface. It is also not intended for use with direct-acting valves that do not support mixing functionality.
Key specifications
Compatible with three or four-way mixing valves
Weather-based control functionality
Weekly heating schedule programming
Room regulator connectivity
Energy-efficient temperature regulation
To use the Tech Controllers I-1, ensure the device is correctly wired to the mixing valve actuator and the temperature sensors according to the provided technical manual. Once powered, navigate the interface to set the desired heating curves and weekly schedules. The controller will then automatically modulate the valve position based on the sensor inputs and the programmed parameters to maintain the target temperature in the heating circuit.
What to consider before purchase
Verify that your existing mixing valve actuator is compatible with the controller output
Ensure the heating system design supports three or four-way valve integration
Check if your current room thermostat or regulator is compatible with the I-1 interface
Confirm that the installation location allows for proper sensor placement
For optimal performance, ensure that the outdoor temperature sensor is mounted in a location protected from direct sunlight and wind. Regularly check the heating system pressure and sensor connections to maintain the accuracy of the weather-based control function.

## FAQ

### How much does the Tech Controllers I-1 Mixing Valve Controller cost, and is it available for purchase?

The price is 182.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 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 09.07.2026 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 Controllers I-1 Mixing Valve Controller 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 OEM 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 OEM 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/11444443/66082557_large.webp