There are 2 sets in the photos. However, it is priced as 1 set. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. While many PLC products will have firmware already installed, BoyNtoy makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application.
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