I think this was intended as a Tattoo DC Adjustable Power Supply.

I bought it to use as a back up bench power supply.

I only used it a couple of times hence the sale.

It has two output sockets that can be set to different voltages and switched.

It also has a footswitch socket ( foot switch NOT supplied) 

Its adjustable from 1.5-18volts with a Digital readout display

It is rated at 1.5 amps.

Works well.