Autometer A/F gauge question

OK, I got this Autometer Ultra-Lite Air/fuel gauge free from a friend. My question is, do I HAVE to run the Autometer Oxygen sensor? Or will a Bosch from the parts store work just as well?

I don't feel like paying $92 for a kit from Summit for a heated sensor if I don't have to. I'd like to put in two sensors, one on each bank, with a cutover switch so I can look at either bank, but that's two sensors. I don't feel like buying two kits. I figure if a basic sensor from the local auto store works, it'll probably be a bit cheaper.

Anybody?
Thanks