The Trio series of state-of-the-art digital serial and Ethernet data radios offers ease-of-use, flexibility, and advanced performance features. With tough environmental specifications and support for industry-standard protocols DNP3, MODBUS, and IEC 60870-5-101, Trio radios are designed for use in the most demanding of SCADA environments. All Trio products are Class I, Div 2-compliant and are backed by an industry-leading 3 year warranty.