For Busch-priOn® base carrier 1-way, 2-way and 3-way. Power supply via separate plug-in terminals, e.g. yellow/white wire pair of the bus line. KNX connection exclusively for bus communication. Connection is made via plug-in terminal on the device. If required, please refer to the current application description for the programmable functions, which you can download from our website www.busch-jaeger.de.