HELMER LK 541 4G GPS tracker for monitoring cars, luggage, and other valuables; supports both 4G LTE and 2G.

Helmer GPS Tracker LK 541 4G — Tracking and Security

The Helmer LK 541 4G is an ideal device for users seeking a reliable solution for tracking cars, luggage, or other valuables. It combines precise GPS positioning (with -165 dBm sensitivity) with support for both 4G LTE (B1/B2/B3/B4/B5/B7/B8/B28A/B28B/B40) and 2G mobile networks. Thanks to its integrated 10,000 mAh rechargeable battery, it can operate for up to 180 days in power-saving mode, making it perfect for long-term use. A strong magnet allows for easy attachment to metal surfaces, ensuring flexibility and discreet placement.

Advanced Tracking Features and Alerts

The device allows you to monitor its current location and route history online via a web interface or the Baanool IOT mobile app (for Android and iOS) completely free of charge, with a monthly data usage of approximately 30 MB. Alternatively, you can determine the location by calling the tracker's SIM card number; the device will then send an SMS containing GPS coordinates and a Google Maps link. Users can also set up virtual boundaries (Geo-fences) and receive alerts if the device leaves the designated area. Additional alarms cover movement, speeding, and tampering (detected via an integrated light sensor). ### Operating Modes and Battery Life The tracker supports three operating modes adaptable to various situations. The Always Online mode keeps all modules active, enabling continuous tracking with a battery life of up to 30 days. In Smart mode, the device switches to offline mode when stationary and wakes up only upon detecting vibration, extending battery life to 50 days. Power Saving mode puts all modules to sleep and wakes the tracker only at set intervals, maximizing battery life up to 180 days.

Technical Specifications

• Supported mobile bands: 4G LTE (B1/B2/B3/B4/B5/B7/B8/B28A/B28B/B40), 2G (850/900/1800/1900 MHz)
• GPS accuracy: 5 m
• GPS module sensitivity: -165 dBm
• Battery: Rechargeable Li-ion, 3.7 V, 10,000 mAh
• Operating temperature: -20 °C to +45 °C
• Dimensions: 106 × 63 × 37.5 mm
• Weight: 343 g

Package Contents

• Power cable
• User manual