The LCN-TXR can simultaneously convert up to two KNX buttons to LCN. It supports not only the buttons themselves, but also the indicator LEDs, measured values and displays. As is usual with LCN, each individual button can be assigned three commands (short, long and off). The module has an I connection for an LCN bus module, e.g. LCN-UPP, LCN-UPS, etc.