In programming the word "tristate" is used quite often to indicate an object with three possible states. A checkbox is a good example, it can be checked, unchecked or it can have no value yet.
I now have to describe two objects in the same context where the first has three states and the second only has two.
I considered using "duostate" for the latter, but google doesn't seem to know the word. And "dualstate" also seems to be incorrect.
So what word could I use to describe an object with two possible states?
Edit: To clarify, the first object has states called In Range, Extended Range and Out of Range and the second only has In Range and Out of Range. I'm trying to write a piece of documentation which describes functions that convert a digit (0, 1 or 2 in this case) to "In Range", "Extended Range" and "Out of Range". There are two functions, one converts the digit to a digital/duo/dual state and the other to the tristate. So, I'm trying to find the right word to describe the first function.