# Temperature regulator Ospel RTM-03 single-module, adjustable -10 to 90°C, hysteresis 0.25–2°C

**URL:** https://aio.lv/en/product--ospel-ext10000251--11867846
**Data updated:** 2026-03-09 17:44 (EET)
**Category:** Control Systems
**Manufacturer:** Ospel
**Manufacturer code:** EXT10000251
**EAN:** 5903669341895
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 44.49 €
**Prices and availability valid until:** 2026-07-16 23:59
**Price without VAT (21%):** 36.77 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ospel-ext10000251--11867846

## 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

Single-module temperature regulator Ospel RTM-03 for control and switching of heating or cooling circuits. Adjustable measurement range from -10 to 90°C with configurable hysteresis 0.25–2°C. Provides temperature-based switching outputs for thermostatic control, suitable for boilers, ventilation, pumps and temperature protection tasks in residential and light-commercial installations.

## Long description

The Ospel RTM-03 single-module temperature regulator is designed to monitor and switch heating or cooling circuits with an adjustable measurement range from -10 to 90°C. The device provides temperature-based switching outputs and configurable hysteresis between 0.25 and 2°C, allowing precise control of on/off cycles. The compact single-module format fits DIN-rail installations in residential distribution boards and light-commercial control panels where reliable temperature regulation is required.
Advantages
The regulator offers a wide measurement range and fine hysteresis adjustment for adaptable temperature control. Its single-module design saves space in distribution enclosures and enables straightforward integration with boilers, circulation pumps and ventilation systems. The clear switching function supports both heating and cooling applications, while the configurable hysteresis reduces short-cycling and stabilizes system operation.
Suitable for
Control of residential or small commercial boilers and heating circuits
Activation of circulation pumps based on temperature thresholds
Ventilation control where temperature-based switching is required
Temperature protection for equipment and local installations
Key specifications
Measurement range: -10 to 90°C
Hysteresis: adjustable from 0.25 to 2°C
Form factor: single-module for DIN-rail mounting
Output: temperature-based switching contacts for control of heating/cooling circuits
Application: suitable for thermostatic control, pump switching and temperature protection
How to use
Install the single-module regulator on a standard DIN rail inside the electrical distribution board, following local wiring regulations. Connect the temperature sensor and load circuits according to the system schematic, ensuring correct polarity and secure terminal connections. Set the desired temperature setpoint within the -10 to 90°C range and adjust the hysteresis to between 0.25 and 2°C to achieve the required switching sensitivity. Verify operation by observing the switching behavior at the chosen setpoint and refining hysteresis to prevent unnecessary cycling.
Usage recommendations
For reliable long-term operation, use a properly rated temperature sensor and ensure the regulator is installed in a dry, ventilated enclosure away from direct heat sources. Select hysteresis settings that balance responsiveness and equipment protection to minimize relay wear and pump short-cycling.

## FAQ

### How much does the Ospel RTM-03 temperature regulator -10 to 90°C cost, and is it available for purchase?

The price is 44.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 14 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. 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 Ospel 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 Ospel 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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