ZIEHL-ABEGG empty housing units are available in different versions as accessories for ZIEHL-ABEGG control technology system components. Made of plastic or aluminium, with a transparent cover or closed plastic cover, the empty housing units can be used as required, e.g. for ZIEHL-ABEGG motor protection devices, selection amplifiers or monitoring devices. The STEP POWER power supply unit supplies additional devices or sensors with a low voltage of 24 V DC. With ZIEHL-ABEGG control technology system components, you can expand and supplement your ventilation system precisely according to your needs. Control technology from ZIEHL-ABEGG achieves maximum efficiency, operational reliability and performance.