FM-Eco4 light+ 3G RS T is a tracking device (3G/2G) with a regular small size housing and internal antenna.
FM-Eco4+ 3G E RS T is a tracking device (3G/2G) with rugged IP67 certified housing and an external antenna, which allows the device to be installed in areas that are hard to find and access.
The RS232 serial port allows connecting digital fuel level sensors for accurate and reliable fuel level monitoring. It also improves safety on the roads: fatigue sensors allow detecting and informing the driver when they are tired, distracted, or not focused on the road. The alcohol sensor will send an alert or block the vehicle if the driver is intoxicated.