Mike,
Looks like they have a new version of the probe, I have attached a photo. Could be they sent you the new and the old probe. Check photo and let us know.
Here is a review that David wrote in Oct (looks like they did this to keep water out)
Reviewer: david bacon from SE Arizona
This new probe kit is a simple upgrade that is well worth the investment. The receptacle that mounts to the controller only takes a few minutes to install. The plug port is now sealed against dust, dirt, moisture. Well worth the price. I highly recommend it.
Best Greg