Trust
Do I have to replace my turnstile?
No; your existing turnstile and its panel stay in place and the product evaluates the signal they produce.
Detail
The only thing that must change is the panel's ability to hand its record out, and that happens through one of three paths.
If the panel cannot hand out records at all we tell you so after measuring; we never call it compatible on a guess.
Source
Source: the protocol table on the compatibility page.