The Eltex Flexi-Hub unit is an interface between the machine and Eltex standalone yarn break sensors. It is intended to be used when it is necessary to have a relay output from the yarn break sensors. It’s relay enables easy connection to the machine’s stop circuit. Additionally it has a running mode input allowing it to be synced with the machine, meaning it will only give a stop output when a yarn breaks and not when the machine is stopped for other reason, e.g. normal machine stops.