The new MDT security module prevents all connection-oriented accesses of the ETS, such as the programming and also the unloading of the bus devices, in the KNX line. This significantly increases the safety of the protected line in the inner and in the outdoor area.A manipulation of the device programming is no longer possible. The safety function is started automatically after bus voltage recovery / programming of the safety module. The deactivation of the safety function is possible depending on the set safety level via the control buttons on the device and /or with the safety password via telegramm. The integrated device monitoring system controls up to 100 KNX devices cyclically. As soon as a device is missing or no longer responds due to a defect, an alarm message is sent.