Series: MEM module Universal input/output module with tenant power feed, installed in RZB LUXIFAIR central battery system. Module for switching between mains and backup mains power in rental areas. The MEM contains: 4 x signalling relays, with 1 x make contact and 3 x break contacts, each of which can be programmed as make or break contacts. Relays 1 and 2 form a mains switchover for the tenant area, but, like relays 3 and 4, can also be used for signalling and control purposes and can be programmed individually. 4 digital switch inputs for 230 V. 1 x network monitor, one-, two- and three-phase. Length: 66 mm Width: 105 mm Height: 90 mm