Why use a separate modem with SIM as you probably have a smartphone with a Bluetooth connection? An SFD Bluetooth device can inform the driver through a smartphone with actual information about the truck, trailer and cargo.
The Squarell Bluetooth 2.1 dongle is a very easy to install SFD (Special Function Device). The dongle can easily overtake the existing RS232 connection as the communication protocol stays the same. The vehicle data you used to receive via RS232 can now easily be sent to your Android smartphone.
When the driver is outside his vehicle, the Bluetooth device can lose connection. The Squarell BT 2.1 dongle has an 8Mb buffer to store the vehicle data when the connection with the end device is lost.
The Bluetooth device is part of Squarell’s advanced vehicle data solutions and products range. With a configurable functionality and extended connectivity, the Squarell Bluetooth device can be used in various automotive applications such as telematics, fleet management, real-time monitoring, measurement and control/interfacing.