# Magnetic Contact Sensor SATEL B-21-BR — cylindrical door/window reed switch, brown finish

**URL:** https://aio.lv/en/product--satel-b-21-br--11863517
**Data updated:** 2026-03-09 17:40 (EET)
**Category:** Smart Sensors
**Manufacturer:** SATEL
**Manufacturer code:** B-21-BR
**EAN:** 5905033338111
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 7.49 €
**Prices and availability valid until:** 2026-07-15 23:59
**Price without VAT (21%):** 6.19 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--satel-b-21-br--11863517

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.99 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

Cylindrical magnetic contact sensor SATEL B-21-BR designed for monitoring status of doors and windows. The reed-type contact provides a magnetic switch in a compact cylindrical housing with brown finish. Suitable for use in alarm and access-control systems to detect opening/closing of panels and trigger security circuits or automation inputs.

## Long description

The SATEL B-21-BR is a cylindrical magnetic contact sensor designed to detect the opening and closing of doors and windows. Its reed-type magnetic switch is housed in a compact, brown-finished body that fits into narrow frames and profiles. The sensor provides a simple normally-closed / normally-open magnetic contact interface suitable for integration with alarm panels and access-control inputs where a discreet, reliable state change detection is required.
Advantages
The cylindrical form factor allows installation in concealed or shallow mounting locations, while the reed-type mechanism ensures low power consumption and long service life due to lack of moving electrical parts. The brown finish matches darker frames and joinery, reducing visual impact. The sensor is compatible with standard wired security and automation circuits and offers straightforward mechanical mounting and wiring for rapid deployment.
Suitable for
 Monitoring residential or commercial doors and windows
 Integration with alarm systems and control panels
 Use in access-control installations to signal door state
 Concealed mounting in narrow profiles and frames
Key specifications
 Cylindrical reed contact design for magnetic state detection
 Compact dimensions suitable for narrow mounting spaces
 Brown exterior finish for visual matching with darker frames
 Wired electrical connection for integration with security inputs
 Suitable for normally-closed or normally-open wiring configurations
How to use
Install the sensor body on the fixed frame and align the magnet element on the moving sash or door so that the contact closes when the door or window is shut. Connect the sensor wires to the alarm panel or input module following the panel manufacturer’s wiring diagram for magnetic contacts. Test operation by opening and closing the protected element and verifying state change on the control panel or monitoring equipment. Ensure mounting screws and wiring are secured and that the gap between sensor and magnet remains within the recommended activation distance.
Usage recommendations
For reliable operation, mount the sensor in a location protected from direct mechanical impact and excessive moisture. Use appropriate wire gauge and secure cable routing to prevent damage; if installation is exposed to weather, provide additional protection or use suitable conduit. Verify compatibility with the target alarm or access-control panel and perform functional tests after installation.

## FAQ

### How much does the Magnetic contact SATEL B-21-BR cost, and is it available for purchase?

The price is 7.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 68 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 06.07.2026 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 SATEL 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 SATEL 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/11863517/67262101_large.webp