# Magnetic Contact Sensor No name KN-CA31 — Side-mounted door/window security contact

**URL:** https://aio.lv/en/product--no-name-kn-ca31--11959750
**Data updated:** 2026-03-12 10:21 (EET)
**Category:** Smart Sensors
**Manufacturer:** No name
**Manufacturer code:** KN-CA31
**EAN:** 5902887043406
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 18.49 €
**Prices and availability valid until:** 2026-07-22 23:59
**Price without VAT (21%):** 15.28 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--no-name-kn-ca31--11959750

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.07.2026 | free |
| Pickup points | 16.07.2026 | 1.89 EUR |
| Courier delivery to door | 16.07.2026 | 4.99 EUR |

## Summary description

The KONTAKTRON BOCZNY KN-CA31 is a side-mounted magnetic contact sensor for door and window security systems. Designed as a two-part reed switch assembly, it detects opening/closing when the magnet and sensor separate. Suitable for integration into alarm panels and access control setups to monitor entry points and trigger alerts when a protected opening is operated.

## Long description

KONTAKTRON BOCZNY KN-CA31 is a magnetic reed switch designed for detecting the open or closed state of doors and windows. The device senses the presence of a magnet when the moving part approaches the fixed contact, providing a simple and reliable signal for security systems, access control, or automation installations. Its compact, side-mounted design allows installation in narrow frames or locations with limited clearance.
Advantages
The KONTAKTRON BOCZNY KN-CA31 offers a compact side-mounted form factor that facilitates discreet installation on doors and windows. The reed switch provides a passive, low-power detection method that is resistant to mechanical wear because it contains no moving electrical contacts exposed to friction. Its straightforward design supports easy integration with alarm panels, control units, and other monitoring equipment using a simple two-wire connection.
Suitable for
Residential and commercial door and window contact sensing
Security alarm systems and intrusion detection
Access control where position monitoring is required
Basic automation tasks that need a presence/absence signal
Key specifications
Mounting type: side-mounted magnetic reed switch
Contact type: normally closed / normally open depending on wiring and model variant
Connection: two-wire electrical connection for signal transmission
Operating principle: magnetically actuated reed contacts
Physical characteristics: compact profile suitable for narrow frames and limited installation space
How to use
Install the KONTAKTRON BOCZNY KN-CA31 by aligning the reed switch body on the fixed frame and the matching magnet on the moving sash so that they approach within the specified gap when the door or window closes. Secure both parts using screws or adhesive depending on the mounting surface, and route the two-wire cable to the control panel or input device. Configure the receiving system to interpret the reed switch signal as open or closed according to the required logic. Verify correct operation by opening and closing the door or window and observing the monitoring equipment.
Usage recommendations
Place the sensor and magnet where the moving part approaches the fixed frame without obstruction. Ensure wiring is protected from mechanical damage and moisture where relevant. Test the contact after installation and periodically as part of routine maintenance. If environmental exposure is a concern, use appropriate sealing or enclosures to protect the device.

## FAQ

### How much does the Magnetic Contact No name KN-CA31 cost, and is it available for purchase?

The price is 18.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 56 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 13.07.2026 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/11959750/67405150_large.webp