Looking for some documentation

["ABLE_1" <royboynospam@xxxxxxxxxxxxx>]

Hi all,

I am looking for a install manual or documentation for an old push button
intercom.

The mfg is Emerson Electric with a Rittenhouse sub-division and a model #
M9034.

I have googled this to death and nothing.  Every time I feel like I am
getting close I hit a wall.

Anyone know of or have a clue on a source for this system.  It is a rather
simple system but some wiring was changed by the building owner and now it
no workie.

The biggest piece of info that I need is whether it is to operate on AC
volts or DC Volts.  Any help or insight would be appreciated.

TIA

Les