The DSX-CHA021S is a set of two M12 channel adapters. These adapters allow you to test and certify installed channel links to ensure reliable transmission of Fast Ethernet in the demanding MICE environment of industrial networking applications. The M12 connectors support the transmission requirements for TIA Cat 5e or ISO Class D. A cabling link that passes the TIA Cat 5e or ISO Class-D requirements fully supports the deployment of Fast Ethernet. The M12 channel adapters also allow you to test and certify installed channel links directly to the 100BASE-TX link transmission performance requirements specified in IEEE Std 802.3-2012 clause 25.4.9.