You are looking at a BIG AC Power Pack from the earlier days of O gauge model roading.
This is the big HOSTLER by Dallee Electronics, a USA based early pioneer in power.
This one says 16 volts, 10 amps. We tested it at 18 volts max.
This unit can run any AC trains including Lionel and American Flyer.
In our service and testing, the remote gave variable voltage. The direction circuit breaker cut power output, which is appropriate to operate a postwar or any electronic E-unit.
The bell and whistle buttons put out a +/- DC signal which should operate a postwar whistle and a modern era bell/whistle.
