SIMATIC S7-1200, Digital I/O SM 1223, 16 DI/16 DO, 16 DI 24 V DC; sourcing/sinking input, 16 DO, sourcing (sinking output), NPN transistor 0.5 A6ES7223-1BL32-1XB0 : Digital I/O SM 1223, 16DI/16DO sinkSKU: 6ES72231BL321XB0Add to WishlistProduct ConditionBrand NewReturn & Refund Policyas per PA terms & conditionsShipping Infocost extra at the time of delivery