Transfer element. 1-wire, spring connection. Direct digital input and output connections (FTA) for Honeywell C300 IOTAs. Passive interfaces (FTA) for connecting to the digital IOTAs of Honeywell C300. Unique labeling: Same connector and orientation for FTA and IOTA. The LED indicator is used to display the switching status. Option to power the IOTA through the FTA (protected by a fuse). Fuse protection per channel (optional). Screw or spring connection.