That model did have a remote control but it may have been an option and didn't necessarily come with it.
No idea where you could find the remote or codes for that unit.

More important however. Do you have the calibration microphone for it. THAT would make the unit worth something. Without that, it is just a 14 band EQ. And honestly, that is pretty useless.

I always hated people that bought EQs for their systems back in the 80s. The only thing they were good for, was to "screw up" the sound. Everyone making smiley faces on the front controls. Well a bass & treble control can do that.
It was ONLY if you had an RTA, would a graphic EQ 'actually' be useful and not detrimental to the audio system. And that BSR EQ14-14R had an RTA built into it with the included (or optional) calibrated microphone.