It's very possible that you can use an alternate sensor. Everyone I've seen has the same voltage curve. All the MB sensors I've seen have three wires and two connectors. The connector with one wire is the O2 signal wire. The connector with two wires is the heater on the sensor.
I think if the sensor will screw in place and you get the wires right it will probably work.
That said, I'm not sure I would do it, but in this day and time, I certainly understand steps to economize.
Best of luck with it and let us know the result.
Have a great day,