# Door/Window Sensor Tellur TLL331091

**URL:** https://aio.lv/en/product--doorwindow-sensor-tellur-tll331091--3555897
**Data updated:** 2025-12-29 13:32 (EET)
**Category:** Sensors & Detectors
**Manufacturer:** Tellur
**EAN:** 5949120000970
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 23.99 €
**Prices and availability valid until:** 2026-07-22 23:59
**Price without VAT (21%):** 19.83 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--doorwindow-sensor-tellur-tll331091--3555897

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 29.06.2026 | free |
| Pickup points | 02.07.2026 | 1.89 EUR |
| Courier delivery to door | 02.07.2026 | 4.99 EUR |

## Summary description

The Tellur TLL331091 is a wireless door/window sensor designed for easy installation and reliable security. It connects via WLAN and operates on AAA batteries with a lifespan of up to 6 months. Measuring 75mm in width, 18mm in depth, and 40mm in height, this compact sensor is perfect for monitoring entry points in your home or office.

## Long description

The Tellur TLL331091 WiFi Smart Door & Window Sensor is a compact wireless sensor designed to monitor doors and windows in homes and offices. It connects to a 2.4 GHz WiFi network, operates on classic AAA batteries and provides event history and tamper alerts via the Tellur Smart app. The sensor's small dimensions (75 × 18 × 40 mm) allow discreet installation on most frames and casings.
Advantages
The sensor offers low energy consumption with a battery life of up to 6 months on AAA batteries. After pairing with the Tellur Smart app, it sends real-time notifications for open/close events, low battery status and tamper/detachment attempts. The device stores a history log of opening and closing times and supports voice activation through Google Home and Amazon Alexa.
Suitable for
 Monitoring entrance doors in homes and apartments
 Securing windows and balcony doors
 Monitoring interior doors in offices and storage rooms
 Integration into smart home setups using Google Home or Amazon Alexa
Key specifications
 Model: Tellur TLL331091
 Connection: WiFi (2.4 GHz only)
 Power source: AAA batteries
 Battery life: up to 6 months (typical use)
 Dimensions: 75 × 18 × 40 mm
 Compatibility: Tellur Smart app, Google Home, Amazon Alexa
 EAN: 5949120000970
How to use
Install the sensor and its magnet on the door or window frame and moving part so that the two parts align when closed. Insert fresh AAA batteries, add the device in the Tellur Smart app following the in-app pairing instructions, and connect it to a 2.4 GHz WiFi network. After successful setup, test open/close notifications and check the event history in the app.
Usage recommendations
Place the sensor within reliable 2.4 GHz WiFi coverage and avoid locating it behind large metal objects. Replace AAA batteries promptly when the app reports low battery. For accurate tamper detection, ensure the sensor and magnet remain firmly fixed to the mounting surface.

## Specifications

| Feature | Value |
|---|---|
| Interface | WLAN |
| Weight | 0.065 kg |
| Package weight | 85 g |
| Battery type | AAA |
| Number of batteries supported | 2 |
| Height | 40 mm |
| LED indicators | Y |
| Width | 75 mm |
| Depth | 18 mm |
| Connectivity technology | Wireless |
| Product colour | White |
| Package depth | 40 mm |
| Package height | 42 mm |
| Package width | 78 mm |
| Number of products included | 1 pc(s) |
| Mobile operating systems supported | iOS, Android |
| Screws included | Yes |
| Battery life | 6 month(s) |
| Battery included | Yes |
| Self-adhesive tape | Yes |
| Mobile app support | Yes |

## FAQ

### How much does the Door/Window Sensor Tellur TLL331091 cost, and is it available for purchase?

The price is 23.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 8 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 29.06.2026 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: Cash payment, 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 Tellur 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 Tellur 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

### Where can I download the instructions for Door/Window Sensor Tellur TLL331091?

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/3555897/54663397_large.webp