It supports both CSD and GPRS communications. It was primarily developed as an AMR (Automated Meter Reading) modem, but has since then found a whole range of applications in the telemetry, SCADA, security, farming, home and office automation industries. The device is rock solid but still expandable.

Features include:

Serial to GPRS with CSD fallback | CSD (Data calls) | Integrated IP stack | Patented GSM stability features | GPRS connection manager | Server or Client mode | USB port | RS232 and RS485 ports | Dual SIM card | SMS alarms | GPRS alarms | 4 Digital Inputs | 2 Relay Outputs | 2 Analog Inputs | SD card for event logging | Expansion port for extra I/O