In addition to the dedicated digital and analog I/O expansion modules, there is also an I/O module for Revolution Pi that has digital inputs/outputs as well as analog inputs/outputs. The RevPi MIO adds 8 analog inputs, 8 analog outputs and 4 digital channels to the Revolution Pi system. The digital channels can be individually configured via software either as digital inputs or digital outputs. Like all I/O modules, the RevPi MIO is protected against interference in accordance with the EN 61131-2 standard and can be operated at -20 ?C to +55 ?C ambient temperature.