Unitronics IO-DI16 $289.23 Unitronics 16 point digital input IO card.Must be used in conjunction with a “EX” expansion card Store › Unitronics IO-DI16 Quantity: ADD TO CART Added! Unitronics 16 point digital input IO card.Must be used in conjunction with a “EX” expansion card Unitronics 5.7" PLC $1,540.80 Add To Cart Unitronics 12.1" PLC $2,772.56 Add To Cart Unitronics EX-A2X $108.66 Add To Cart