Maestro Heritage 6+6 Digital I/O gateway integrates I/O capabilities with wireless communications via SMS or GPRS. It supports standard industry protocols such as Modbus RTU or DNP 3.0 protocol and is compatible with most SCADA server software or Human Machine Interfaces (HMIs) that support these protocols. In addition to its own I/Os, the Maestro Heritage 6+6 Digital I/O gateway is also a wireless gateway for external devices, making it a cost-effective, flexible and powerful remote I/O and communications device.