header-product Controller TECH ST-27I (TSST27IBK) for 2 pumps — for central heating, domestic hot water or underfloor heating, black
96.49 €

Controller TECH ST-27I (TSST27IBK) for 2 pumps — for central heating, domestic hot water or underfloor heating, black

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Controller TECH ST-27I (TSST27IBK) for 2 pumps — for central heating, domestic hot water or underfloor heating, black

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Controller TECH ST-27I (TSST27IBK) for 2 pumps — for central heating, domestic hot water or underfloor heating, black

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Short description

TECH ST-27I controller (model TSST27IBK) is a control unit designed for managing two pumps used in central heating (CO), domestic hot water (CWU) or underfloor heating systems. The unit coordinates pump operation to ensure proper circulation and switching between heating circuits. Supplied in black, it is intended for installation in residential or light-commercial heating systems where two independent pump outputs are required.
Available for order: 1 pcs.
Warranty: 2 Years
SKU: 11960029
Manufacturer: TECH
delivery
to the Customer Service Center at Kengaraga 2b, Riga
29.06.2026 {{selectedOffer.officeDeliveryString}}
free
Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
29.06.2026 {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
02.07.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 €
Parcel couriers
Latvijas Pasts pakomāts / Unisend / DPD Paku skapis / Omniva / Venipak Pickup / Venipak Locker / Latvijas Pasts nodaļa
02.07.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.99 €
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3 mth. х 32.16 €

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All payment Methods:
Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment
36 months installment: from 2.68 euros per month
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Product information

Description

TECH ST-27I controller (model TSST27IBK) is a compact control unit for managing two pumps in central heating (CO), domestic hot water (CWU) or underfloor heating installations. Designed for residential and light-commercial systems, the controller coordinates the operation of two independent pump outputs, enabling correct circulation, timed switching and integrated coordination between heating circuits. The unit is supplied in black and is intended for fixed installation as part of a larger heating control setup.

Advantages

The controller provides reliable two-pump management with straightforward wiring and a compact enclosure suitable for common installation environments. It supports automated switching between circuits to maintain circulation and temperature stability while reducing manual intervention. Built for compatibility with standard pump types used in heating and domestic hot water systems, the device simplifies system integration and reduces the need for multiple separate relays.

Suitable for

  • Residential central heating systems with two circulation pumps
  • Domestic hot water (CWU) systems requiring coordinated pump control
  • Underfloor heating installations with dual-zone or pumped circuits
  • Light-commercial buildings with separate heating circuits

Key specifications

  • Control channels: two independent pump outputs for coordinated operation
  • Intended applications: central heating (CO), domestic hot water (CWU), underfloor heating
  • Housing color: black
  • Mounting: fixed installation suitable for boiler rooms or distribution cabinets
  • Electrical interfaces: relay outputs compatible with standard pump control voltages

How to use

Install the controller according to local electrical and building regulations, connecting supply power and the two pump outputs to the corresponding terminals. Integrate sensor inputs and any external control signals as required by the heating system design so the unit can coordinate pump switching and circulation. After wiring, commission the controller by verifying correct pump activation and switching behaviour during normal and demand conditions. Routine checks of electrical connections and pump operation ensure continued reliable performance.

Usage recommendations

For reliable operation, pair the controller with pumps and sensors that match the system voltage and specifications, protect the unit with appropriate circuit protection, and follow manufacturer or installer guidance for mounting location to avoid excessive moisture or heat exposure.

Description

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Customer reviews

Customer questions

FAQ

How much does the TECH ST-27I controller for 2 pumps cost, and is it available for purchase?

The price is 96.49 € (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 29.06.2026 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 ST-27I controller for 2 pumps be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. We work with leading banks and leasing companies in Latvia, allowing you to make your purchase on convenient terms — with a minimal down payment and a repayment period from 3 to 36 months. You can apply for credit or installments for the TECH ST-27I controller for 2 pumps online, and the application process is as simple as possible:
  • Select the product on the website and add it to your cart;
  • When placing your order, choose the payment method “Installments”;
  • Fill in the required details for the lending partner;
  • Receive a decision within a few minutes.
For more information about available payment options, interest-free installment terms, and credit conditions in Latvia, please visit the Payment page.

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. We will assist with consultation, warranty claim processing, and coordination with certified service centers.
warranty
14-Day Return Policy We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.
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Fast Delivery Get your orders as quickly as possible — right to your door, parcel lockers, or pickup points across Latvia and the EU.
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Secure Payment Pay the way you prefer: cash, VISA, MasterCard, Apple Pay, Google Pay, bank transfer, or 0% installment plan.
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Quality Since 2008 AiO.lv has been on the market for over 18 years and has earned trust — with more than 6000 genuine positive reviews on Google.