Hi all,
I have purchased and installed most of a Visonic system, the main panel being a Visonic PowerMax Express. I am looking to purchase batteries for the external sounder but am not sure which model number to use for the search as on the abs housing it is labeled as an MCS-740 and on the PCB it is labeled as an MCS-730. This is of course stupidity on my part but if someone could humour be I'd be very much obliged.
Matthew