SIMATIC S7-300, Digital input SM 321, Isolated 32 DI, 24 V DC, 1x 40-pole6ES7321-1BL00-0AA0 : SM321, 32DI, DC24VSKU: 6ES73211BL000AA0Programming support? (optional)500QuantityOnly 7 left in stockAdd to WishlistProduct ConditionBrand NewReturn & Refund Policyas per PA terms & conditionsShipping Infocost extra at the time of delivery