transformer, is it safe?

[phillyreading]

I just bought a used transformer at a flee market yesterday along with a bunch of switches, plastic buildings and a couple of bridges.
The transformer is a TAC 2001 by Troller Corp. of Chicago IL. It has two settings for track voltage; 0 to 9 volts and 0 to 18 volts, also has mulitple taps for accessory voltages. Has seperate whistle controls for each track. Tested it with a multimeter and it put out the proper voltages that were listed on the transformer.
My question, is it Williams compatible? And can it safely work with other brands? If not, I will sell it at the train show in late January here in south Florida.

Lee F.

[phillyreading]

Well I tested the transformer and it works very well with the older SD-45's by Williams, had to reverse the leads to get the unit with the True Blast 2 horn to test both features of the T.B. 2 horn unit.
The plug is an older one without the polarized feature, so I know it's a few years old.

Lee F.