SIGMA Surplus is a division of SIGMA Equipment INC. We stock a wide variety of items ranging from small parts to complete machines.SIGMA Surplus is a Division of SIGMA Equipment INC. Designated trademarks, brand names and brands appearing herein are the property of their respective owners. Powered by SixBit's eCommerce Solution. The item "Allen-Bradley 1756-L61 PLC Processor Series B F/W Rev. 1.9 Tested" is in sale since Thursday, March 26, 2020. This item is in the category "Business & Industrial\Industrial Automation & Motion Controls\PLCs & HMIs\PLC Processors". The seller is "sigmasurplus" and is located in Evansville, Indiana. This item can be shipped worldwide.