“NI fine unit ,shown with MAX 4.9 ,containing analog in,analog out , digital in and relay digital out modules with field connectors, able to be used with serial DB9 port,parallel DB25 port , IEEE 485 or specialized NI acquisition board as well. From 2015 up to May 2021,all components where driven with PCI 6024E in multiplexed mode.(PCI 6024E not included in scope of delivery)”