Expansion I/O modules allow for a maximum of 44 digital I/O. The relays come with ac or dc inputs, and transistor or relay outputs. The unit's program memory allows for 200 rungs/99 function blocks, ...

This file type includes high resolution graphics and schematics when applicable. According to the research firm IHS Inc., about 54 million relays and timers were purchased in 2013, a number projected ...