# Thermostat rotary switch berker 20308989, white, 250 V AC, 50–60 Hz

**URL:** https://aio.lv/en/product--berker-20308989--1937410
**Data updated:** 2026-03-20 09:43 (EET)
**Category:** Smart Switches
**Manufacturer:** berker
**Manufacturer code:** 20308989
**EAN:** 4011334309437
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 92.49 €
**Prices and availability valid until:** 2026-07-13 23:59
**Price without VAT (21%):** 76.44 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--berker-20308989--1937410

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 01.07.2026 | free |
| Pickup points | 06.07.2026 | 1.99 EUR |
| Courier delivery to door | 06.07.2026 | 4.99 EUR |

## Summary description

Rotary thermostat berker 20308989 in white finish for temperature control in heating and ventilation systems. Mechanical rotary switch design, rated for AC mains 250 V and 50–60 Hz frequency. Suited for wall mounting in residential or light-commercial interiors to regulate room temperature and control heating circuits.

## Long description

Rotary thermostat berker 20308989 in white is a mechanical control device designed for manual regulation of room temperature in heating and ventilation systems. The compact, wall-mountable design integrates a rotary switch that adjusts setpoint temperature and operates on standard AC mains voltage. Intended for indoor residential and light-commercial environments, this thermostat provides straightforward temperature control for single-zone heating circuits and fan/ventilation applications.
Advantages
The mechanical rotary switch offers reliable, maintenance-free operation without the need for batteries or programming. Its white finish and discreet profile suit a range of interior styles and mounting locations. Rated for mains voltage and standard power frequency, the thermostat is compatible with common heating boiler and fan installations, providing direct and immediate feedback when adjusting the setpoint.
Suitable for
Manual control of room temperature in homes and apartments
Single-zone heating circuits and electric heaters with compatible wiring
Wall-mounted installations in offices, small shops, and utility rooms
Basic ventilation or fan control when integrated into HVAC circuits
Key specifications
Operating voltage: 250 V AC
Frequency: 50–60 Hz
Control type: mechanical rotary switch
Mounting: wall-mounted unit suitable for flush or surface installation depending on wiring box
Finish: white
How to use
Install the thermostat on a standard wiring box following local electrical regulations and ensure power is disconnected before wiring. Connect the supply and load conductors according to the heating or ventilation circuit diagram provided by the installation manual. After restoring power, rotate the dial to select the desired room temperature; the internal mechanism will switch the output when the measured temperature crosses the setpoint. Regularly check wiring connections and housing for secure mounting.
Usage recommendations
Place the thermostat on an interior wall away from direct sunlight, drafts, or heat sources such as radiators to ensure accurate temperature sensing. For circuits with inductive loads, use appropriate contact protection or relays as required by the connected equipment and local electrical codes.

## Specifications

| Feature | Value |
|---|---|
| Type | Rotary switch |
| Quantity | 1 |
| Product colour | White |
| Memory function | No |
| AC input frequency | 50 - 60 |
| AC input voltage | 250 |

## FAQ

### How much does the Thermostat berker 20308989 rotary switch cost, and is it available for purchase?

The price is 92.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 12 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 01.07.2026 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 Thermostat berker 20308989 rotary switch 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 berker 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 berker 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/1937410/58132397_large.webp