# Door Contact Sensor No name KONTAKTRON BRAMOWY KN-D3 — KN-D3 magnetic reed switch for gate/door monitoring

**URL:** https://aio.lv/en/product--no-name-kn-d3--11959941
**Data updated:** 2026-03-11 13:59 (EET)
**Category:** Smart Sensors
**Manufacturer:** No name
**Manufacturer code:** KN-D3
**EAN:** 5902887026416
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 15.49 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 12.80 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--no-name-kn-d3--11959941

## 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

KONTAKTRON BRAMOWY KN-D3 is a KN-D3 magnetic door/gate contact (reed switch) for monitoring open/closed state. Designed to be mounted on doors, gates or frames, it provides a simple wired signal when magnet and sensor separate. Suitable for alarm systems, access control or basic position sensing in residential and light commercial installations.

## Long description

KONTAKTRON BRAMOWY KN-D3 is a magnetic reed switch designed to detect the open or closed state of doors, gates and frames. The KN-D3 provides a simple wired contact signal when the magnet and sensor separate, enabling integration with alarm systems, access control panels or basic position sensing in residential and light commercial installations. The device is compact and intended for surface mounting where reliable binary state detection is required.
Advantages
The KN-D3 offers a straightforward mechanical design with low power requirements and a normally closed or normally open contact depending on installation orientation. It provides a direct wired output with minimal electronic components, which simplifies compatibility with most alarm control units and relay inputs. The unit’s compact form factor allows installation in tight spaces on doors, gates or frames, and its passive operation ensures long-term stability without the need for internal power.
Suitable for
Perimeter security on residential doors and gates
Integration with alarm systems and access control
Position sensing for garage doors and entrance gates
Basic open/closed monitoring in light commercial installations
Key specifications
Sensor type: magnetic reed switch (contact sensor)
Operation: detects separation between magnet and sensor (open/closed state)
Output: wired contact suitable for alarm panels or relay inputs
Mounting: surface mount on door, gate or frame
Construction: passive mechanical switch with no internal power source
Environment: intended for indoor or sheltered outdoor use in residential and light commercial settings
How to use
Mount the sensor body on the fixed frame and align the magnet on the moving part (door, gate or panel) so that the two elements are adjacent when closed. Connect the sensor’s wired contact to the alarm system or control input following the control unit’s wiring diagram for magnetic contacts. Verify correct orientation and contact state by manually closing and opening the door or gate while monitoring the control panel to ensure the system registers open and closed states reliably.
Usage recommendations
For reliable operation, ensure that the magnet and sensor are aligned within the recommended gap specified by the installer instructions and protected from direct exposure to heavy weather. Use appropriate cable routing and strain relief when connecting to control equipment, and test the contact response after installation and after any maintenance. Consider placement that avoids excessive mechanical stress or impact to the sensor housing.

## FAQ

### How much does the Door Contact Sensor No name KONTAKTRON BRAMOWY KN-D3 cost, and is it available for purchase?

The price is 15.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 41 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/11959941/67405359_large.webp