# Magnetic Reed Switch (Side) KONTAKTRON KN-CA40 — KN-CA40 no name

**URL:** https://aio.lv/en/product--no-name-kn-ca40--11959534
**Data updated:** 2026-03-11 13:59 (EET)
**Category:** Smart Sensors
**Manufacturer:** No name
**Manufacturer code:** KN-CA40
**EAN:** 5902887043529
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 3.99 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 3.30 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--no-name-kn-ca40--11959534

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.07.2026 | free |
| Pickup points | 08.07.2026 | 1.99 EUR |
| Courier delivery to door | 08.07.2026 | 4.99 EUR |

## Summary description

Side-mounted magnetic reed switch KONTAKTRON KN-CA40 (MPN KN-CA40). A mechanical magnetic contact sensor designed to detect the presence or absence of a magnet for security and position-sensing applications. Typical uses include door/window alarm sensors, cabinet or gate position monitoring, and simple proximity detection in alarm or control systems. Provides a compact side-fit form factor for installation in frames and narrow profiles.

## Long description

The Magnetic Reed Switch (Side) KONTAKTRON KN-CA40 is a compact side-mounted magnetic contact sensor designed for detecting the presence or absence of a magnet. Its narrow, side-fit form factor makes it suitable for installation in door and window frames, cabinets or narrow profiles where space is limited. The device operates as a mechanical switch that closes or opens in response to a magnetic field, providing a simple and reliable interface for alarm, control and position-sensing systems.
Advantages
The side-mounted design enables installation in slim frames and tight spaces without protruding parts. As a mechanical reed switch, it provides a straightforward electrical contact change in response to a magnetic field, ensuring compatibility with most alarm panels and control inputs. The compact construction supports discreet integration and stable operation with low power consumption when used in monitoring circuits.
Suitable for
Door and window alarm sensors in residential and commercial security systems
Cabinet, locker and gate position monitoring
Simple proximity detection in alarm and automation controls
Retrofit installations where space constraints require a side-mounted sensor
Key specifications
Mounting orientation: side-mounted form factor for narrow profiles
Operating principle: magnetic reed contact (mechanical switch activated by magnet)
Typical applications: security sensors, position detection, proximity switching
Physical characteristics: compact, low-profile housing suitable for frame installation
Electrical interface: closes/opens contact in presence/absence of magnetic field (requires compatible alarm/control input)
How to use
Install the reed switch in the frame or profile on the moving part (for example the door or window frame) so that the matching magnet is positioned on the moving leaf and aligns with the switch when closed. Connect the switch leads to the alarm panel or control input according to the system wiring diagram, observing proper polarity if applicable and ensuring secure electrical connections. Test the sensor by moving the magnet into and out of proximity to confirm the contact opens and closes as expected. Secure the switch in place using screws or adhesive as appropriate for the mounting surface.
Usage recommendations
Place the magnet and switch at a consistent gap to ensure reliable activation; avoid excessive separation or misalignment. Use the switch within the electrical ratings and environmental conditions supported by the host alarm or control system. For outdoor or high-moisture environments, provide additional sealing or protection, and verify compatibility with the installation substrate before fixing.

## FAQ

### How much does the Magnetic Reed Switch KONTAKTRON KN-CA40 cost, and is it available for purchase?

The price is 3.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 57 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 03.07.2026 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 No name 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 No name 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/11959534/67404915_large.webp