Controllers - PLC Modules definition: A PLC Module contains several different modules that can be coupled together to build a customized controller. Typically, a base module cont... Controllers - PLC Modules Product Listing: 31M533,728089-08.Industrial Automation and Controls type:Panel Meters(180325),Pneumatics, Hydraulics(159981),Controllers - Machine Safety(121468),Industrial Equipment(23367),Time Delay Relays(16852) .Controllers - PLC Modules has 2 pieces of spot stock price information, you can click the "RFQ" button to confirm the inventory and price with the Elecinsight.