Z-D-IO has N.6 digital inputs, N.2 SPST relays, capacity of 2Aac, 250 Vac. It can be used as simple Input/Output module or, through dip-switches, is possible to acticate special functions to drive motors, pneumatic and motorised valves.The module is ModBUS Slave and can be coupled with any ModBUS Master device. A 3-way galvanic isolation among Power supply // output // RS485 circuits assures the integrity of your datas.