1. The document describes a 2-in-1 GSM fuel level sensor that combines a fuel level sensor and GPS tracker into a single device for real-time fuel monitoring, route tracking, and fuel theft prevention. 2. It has features like configurable reporting of fuel levels, refueling events, and other metrics over SMS, email, or a telematics server. It can also be configured remotely over Bluetooth or the internet. 3. The sensor connects to other devices via CAN/S6 interface to form an advanced telematics system for monitoring complex fleet or stationary fuel systems. This allows for consolidated data reporting without additional hardware or programming of reporting templates.