# Door/Window Contact Sensor Eura MA-05A3 with Built-in Siren (MA-05A3)

**URL:** https://aio.lv/en/product--eura-ma-05a3--11959756
**Data updated:** 2026-06-19 17:34 (EEST)
**Category:** Smart Sensors
**Manufacturer:** Eura
**Manufacturer code:** MA-05A3
**EAN:** 5905548271033
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 5.99 €
**Prices and availability valid until:** 2026-07-21 23:59
**Price without VAT (21%):** 4.95 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--eura-ma-05a3--11959756

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | Thursday | free |
| Pickup points | 30.06.2026 | 1.89 EUR |
| Courier delivery to door | 30.06.2026 | 4.99 EUR |

## Summary description

Eura MA-05A3 is a door/window opening contact sensor with an integrated siren. Designed to detect opening of doors or windows and provide audible alarm signaling, it connects to compatible security systems to enhance perimeter protection. Suitable for residential and small commercial installations where immediate local alerting on tamper or opening events is required.

## Long description

The Eura MA-05A3 door and window contact sensor is a compact security device featuring an integrated siren. It is designed to monitor the opening of doors or windows, providing an immediate audible alert when the magnetic contact is broken. The device operates independently without the need for complex wiring, making it a practical solution for enhancing security in various indoor environments.
Advantages
This sensor offers a dual-functionality mode, allowing users to choose between a short entry chime or a continuous alarm signal. Its wireless design ensures a straightforward installation process, as the unit is mounted using double-sided adhesive tape, eliminating the need for drilling or cables. The device is energy-efficient, ensuring long-lasting performance on a standard battery set, and includes a manual switch to easily disable the alarm when not required.
Suitable for
Residential homes and apartments
Office spaces
Garages and storage sheds
Camping trailers and mobile homes
This device is not suitable for outdoor use as it is rated with an IP20 protection level, meaning it is not resistant to moisture, rain, or extreme weather conditions. It is also not intended for high-security applications that require remote monitoring or integration with professional alarm systems.
Key specifications
Power supply: 4.5V DC (3 x LR44 1.5V batteries)
Alarm volume: 105 dB at 1 meter
Current consumption during alarm: 100 mA
Operating temperature range: +10ºC to +40ºC
Dimensions: 65 x 30 x 25 mm and 37 x 13 x 17 mm
Protection rating: IP20
Weight: 40 g
How to use
To install the sensor, clean the surface of the door or window frame and the moving part of the door or window. Apply the provided double-sided adhesive tape to the back of both sensor components. Position the two parts so that they are aligned and in close proximity when the door or window is closed. Once mounted, select the desired operating mode using the integrated switch. When the door or window is opened, the magnetic contact is broken, triggering the selected acoustic signal.
What to consider before purchase
Ensure the mounting surface is clean and dry for proper tape adhesion
Verify that the operating temperature of the location stays within the +10ºC to +40ºC range
Check that the batteries are installed correctly before mounting
Usage recommendations: Regularly test the alarm functionality by opening the protected door or window to ensure the batteries are providing sufficient power for the 105 dB siren.

## FAQ

### How much does the Eura MA-05A3 door/window contact sensor cost, and is it available for purchase?

The price is 5.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 10 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 Thursday 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: Cash payment, 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 Eura 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 Eura 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/11959756/68890471_large.webp