Terminal Base, Flex I/O, 32 Point, Cage Clamp, 24 - 16 AWG, 31.2 Volt AC/DC. A terminal base is used to land field I/O wiring and house a removable I/O module. Allen-Bradley® catalog item 1794-TB32 from Rockwell Automation® is a FLEX™ I/O terminal base. It has 32 I/O terminals, eight common terminals, and 8 +voltage terminals. It has screw clamp.