# Wired door/window sensor SATEL B-4M — metal housing, 100 V input, 78.5×29×54.5 mm

**URL:** https://aio.lv/en/product--satel-b-4m--10789946
**Data updated:** 2026-03-07 18:03 (EET)
**Category:** Sensors & Detectors
**Manufacturer:** SATEL
**Manufacturer code:** B-4M
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 24.49 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 20.24 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--satel-b-4m--10789946

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 02.07.2026 | free |
| Pickup points | 07.07.2026 | 1.99 EUR |
| Courier delivery to door | 07.07.2026 | 4.99 EUR |

## Summary description

The SATEL B-4M is a wired door/window sensor with a metal housing designed for security and access control systems. It accepts a 100 V power input and measures 78.5 × 29 × 54.5 mm. The sensor provides a robust wired connection for reliable contact monitoring of doors or windows, suitable for alarm panels and commercial or residential installations.

## Long description

The SATEL B-4M wired door/window sensor in a metal housing is designed for perimeter protection in security and access control systems. It provides a robust, surface-mounted magnetic contact suitable for monitoring doors, windows, gates and other access points. The metal enclosure shields the wiring and contact elements from mechanical damage and attempted sabotage while the wired connection ensures stable signaling to alarm panels and control units. The unit accepts a 100 V input and has compact dimensions of 78.5 × 29 × 54.5 mm, making it suitable for installations where a durable, tamper-resistant contact is required.
Advantages
The metal housing increases mechanical strength and protects internal wiring from external impacts and tampering, improving long-term reliability in demanding environments. Wired connection provides consistent, low-latency signaling to alarm and access control systems, avoiding issues related to battery replacement or radio interference. Surface mounting with screw fixation ensures stable placement on doors, gates or frames, and the compact footprint enables installation in confined spaces such as garage gates or industrial doors.
Suitable for
 Wired alarm panels and security systems
 Surface-mounted doors, windows and garage gates
 Locations with increased risk of mechanical exposure or sabotage
 Commercial and residential perimeter protection
Key specifications
 Form factor: surface-mounted wired magnetic contact
 Housing material: metal, tamper-resistant enclosure
 Power input: accepts 100 V supply
 Dimensions: 78.5 × 29 × 54.5 mm
 Connection type: wired contact for direct integration with alarm panels
 Suitable mounting: screw fixation for secure installation
How to use
Mount the SATEL B-4M on the surface of the door, window frame or gate using the provided screw holes, aligning the magnetic elements to ensure proper contact when closed. Route and secure the wiring inside the metal housing to protect it from damage, then connect the contact wires to the alarm panel or control unit according to the installer’s wiring diagram and the panel’s input specifications. Verify correct operation by closing and opening the protected element while monitoring the panel for signal changes. Ensure the 100 V supply is applied only where the installation documentation or system design specifies such input voltage.
Usage recommendations
For reliable operation, use the SATEL B-4M in installations where a sturdy, tamper-resistant wired magnetic contact is required. Regularly inspect mounting screws and housing integrity in high-vibration or high-traffic locations, and verify wiring insulation to maintain continuous contact signaling. When used on garage gates or external doors, ensure the mating magnet is aligned and protected from debris to prevent false alarms.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.262 kg |
| Operating temperature (T-T) | -10 - 55 |
| Power supply input voltage | 100 |
| Height | 54.5 mm |
| Width | 78.5 mm |
| Depth | 29 mm |
| Connectivity technology | Wired |
| Product colour | Silver |
| Housing material | Metal |

## FAQ

### How much does the SATEL B-4M wired door/window sensor cost, and is it available for purchase?

The price is 24.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 13 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 02.07.2026 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

### Where can I download the instructions for SATEL B-4M wired door/window sensor?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/10789946/64975040_large.webp