I/O Module, CompactLogix, 16 Point, Solid State, DC Source, Protected Output, 24 Volt DCOur Bulletin 1769 Compact I/O™ chassis-based modules can be used as local and distributed I/O for a 1769 CompactLogix™ L3x, CompactLogix 5370 or Compact GuardLogix® & 5370 controller. Rack-type features in a rackless design lower costs and reduce replacement parts inventory. A built-in removable terminal block provides connections to I/O sensors and actuators.