The Productivity2000 programmable controller line includes discrete and analog input and output modules. The new ac and dc discrete I/O modules include eight-point, 100-120 Vac input and output modules, eight- and 15-point, 3.3-24 Vdc input and output modules and high-density, 32-point, 12-24 Vdc input modules. These I/O modules allow easy connections for photo eyes, proximity sensors, limit switches, pushbuttons, light curtains or any other discrete control device. Twelve-bit, low-resolution four-channel current and voltage analog I/O modules also are available to measure and control process variables such as level, flow, and pressure.