# Door/window sensor SATEL K-3 — wired aluminium housing, 20 V input, 24 g

**URL:** https://aio.lv/en/product--satel-k-3-2e--11863551
**Data updated:** 2026-03-09 17:40 (EET)
**Category:** Smart Sensors
**Manufacturer:** SATEL
**Manufacturer code:** K-3 2E
**EAN:** 5905033335240
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 10.49 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 8.67 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--satel-k-3-2e--11863551

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.99 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

Satel K-3 is a wired door/window magnetic contact sensor with an aluminium housing. Designed for intrusion detection, it features a 20 V power supply input and weighs 24 g. The sensor connects via hardwired interface for reliable signaling of door or window open/close status in alarm and access control systems.

## Long description

SATEL K-3 is a wired door/window magnetic contact sensor in a sealed aluminium housing, designed for flush mounting in doors and window frames. The device consists of two watertight parts: a reed (magnetic) switch and a magnet. When both parts are in contact the circuit remains closed; separating them opens the circuit and signals an intrusion or change of state. The sensor is intended for connection to alarm control panels with NC inputs and can also be used as a control element in automation systems. The unit accepts a 20 V input and has a lightweight construction of approximately 24 g.
Advantages
The sealed aluminium body provides mechanical protection and a discreet, durable finish suitable for recessed installation. Flush-mount design allows the sensor elements to be screwed into prepared holes in wooden or plastic frames for an unobtrusive fit. Being a hardwired magnetic contact ensures continuous, reliable signaling without dependence on batteries or wireless links. Compatibility with NC inputs and common automation systems makes the sensor versatile for perimeter protection and access control applications.
Suitable for
 Residential and commercial door intrusion detection
 Window perimeter protection in homes, offices, and retail
 Integration with alarm control panels featuring NC inputs
 Use as a control input in building automation systems
Key specifications
 Type: Wired magnetic contact (reed switch and magnet)
 Mounting: Flush/insert-mounted for door and window frames
 Housing material: Sealed aluminium
 Power input: 20 V
 Termination: 2EOL (1.1 kΩ)
 Weight: 24 g
 Contact configuration: NC-compatible input operation
How to use
Prepare appropriately sized holes in the door or window frame for flush mounting, then insert and screw the two aluminium parts so that the faces of the reed switch and the magnet are aligned and make contact in the closed position. Connect the sensor wiring to the alarm control panel or automation input according to the panel manufacturer’s NC input wiring instructions and the 2EOL termination requirements. Verify correct operation by opening and closing the door or window and checking the control panel for corresponding state changes.
Usage recommendations
Install the sensor in locations where the magnet and reed switch can be aligned precisely and protected from direct mechanical impact or moisture ingress at the joint. Use the specified 2EOL (1.1 kΩ) termination and ensure wiring is routed to avoid strain; follow the alarm panel manufacturer’s guidance for NC input connections and testing.

## Specifications

| Feature | Value |
|---|---|
| Power supply input voltage | 20 |
| Tamper protection | Yes |

### Features

| Feature | Value |
|---|---|
| Connectivity technology | Wired |
| Product colour | Silver |
| Housing material | Aluminium |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.024 kg |

## FAQ

### How much does the SATEL K-3 door/window wired sensor cost, and is it available for purchase?

The price is 10.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 25 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 06.07.2026 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

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: connectivity technology, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

### Where can I download the instructions for SATEL K-3 door/window wired 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/11863551/67436987_large.webp