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Click for Partno list TB20 Head Units TB20 Base module Spare TB20-C CanOpen Slave TB20-C ProfiBus Slave TB20-C ProfiNet Slave Automation Warehouse Ph: 0734880177 email: click	Note: indicative image may not reflect actual product ® STEP, S7-200, S7-300, S7-400, WinCC, SIMATIC are registered trademarks of Siemens	TB20 Base module Spare Part Number: 600-900-9AA01 Description: Base module for TB20 which the Electronic module plugs into. Note: This is a spare part only, every I/O module comes with a base module. Login for Pricing