Door/Window Sensor Tellur TLL331091

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.

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.