Voice Alarm System Extension Modules for Enhanced Notification Zones - RECHOR MR-30, MR-50, MR-70

Each expansion module adds 20 alarm zones and has 20 inputs for receiving commands from fire alarm systems, as well as 20 buttons for selecting alarm zones. The MP-30, MP-50 and MP-70 expansion modules increase the number of zones to 30, 50 and 70 zones respectively.
MP-30 expands the signalling and switching field from 11 to the 30th zone; MP-50 expands the signalling and switching field from 31 to the 50th zone; MP-70 expands the signalling and switching field from 51 to the 70th zone.