# Surface-mounted reed switch contact sensor Alarmtech MC 270-S45, Grade 3

**URL:** https://aio.lv/en/product--alarmtech-mc-270-s45--11863494
**Data updated:** 2026-03-09 17:40 (EET)
**Category:** Sensors & Detectors
**Manufacturer:** Alarmtech
**Manufacturer code:** MC 270-S45
**EAN:** 5901508430540
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 38.49 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 31.81 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--alarmtech-mc-270-s45--11863494

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 10.07.2026 | free |
| Pickup points | 15.07.2026 | 1.99 EUR |
| Courier delivery to door | 15.07.2026 | 4.99 EUR |

## Summary description

Surface-mounted reed switch (kontaktron) Alarmtech MC 270-S45, Grade 3. A magnetic contact sensor designed for door and window monitoring; installs on the surface without recessed mounting. Provides basic open/close state detection for alarm systems and access control panels. Suitable for residential and commercial use where a Grade 3 security level is required.

## Long description

The Alarmtech MC 270-S45 is a surface-mounted reed switch contact sensor designed for reliable door and window monitoring. This compact magnetic contact provides basic open/close state detection for alarm systems and access control panels without the need for recessed installation. Built for applications requiring Grade 3 security, the MC 270-S45 suits both residential and commercial environments where a higher-than-basic intrusion detection level is needed.
Advantages
The surface-mounted design enables quick installation on most frames and casings without cutting or mortising. The reed switch mechanism offers a simple, low-power solution compatible with conventional wired alarm inputs. Its Grade 3 classification indicates enhanced robustness and suitability for environments with greater security demands. The sensor's small footprint minimizes visual impact while providing dependable contact monitoring for doors and windows.
Suitable for
 Monitoring external and internal doors
 Window contact detection in homes and offices
 Integration with wired alarm systems and access control panels
 Sites requiring Grade 3 security level
Key specifications
 Type: Surface-mounted magnetic reed contact
 Function: Normally closed / open state detection (magnetic actuation)
 Installation: Surface mounting on frame and leaf without recessing
 Security class: Grade 3
 Compatibility: Designed for wired alarm and access control inputs
 Form factor: Compact, low-profile housing for discreet mounting
How to use
Mount the main sensor body to the fixed frame and the magnetic element to the moving leaf so that the two parts align when the door or window is closed. Connect the sensor leads to the alarm panel or access control input according to the panel's wiring diagram, observing correct polarity and tamper circuits if applicable. Test the contact by opening and closing the door or window and verifying corresponding state changes on the control panel. For reliable operation ensure alignment tolerance and gap specifications are met during installation.
Usage recommendations
For optimal performance, install the sensor on a clean, flat surface and avoid mounting in locations with heavy vibration or metallic obstructions that may interfere with magnetic operation. Verify compatibility with the specific alarm panel input requirements and, where necessary, use appropriate end-of-line resistors or tamper wiring as required by the security system design.

## FAQ

### How much does the Alarmtech MC 270-S45 surface-mounted reed contact cost, and is it available for purchase?

The price is 38.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 6 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 10.07.2026 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 Alarmtech 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 Alarmtech 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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