CoralVue Hydros Slim Temperature Probe (Requires Controller)

***Please be certain this item is what you want and that you know what is does and how it does it.  These systems are cool, but not universal.  If you need to ask me "Will this work with..."  the answer is "no".   I do not accept returns and we would both be bummed out if you didn't know what you were getting and then tried to make it my problem.

Here's what AI has to say:

The CoralVue Hydros Slim Temperature Probe is a high-quality temperature monitoring device specifically designed for fish tanks and aquariums. This probe is compatible with the CoralVue Hydros Controller, allowing users to easily track and adjust water temperatures to ensure optimal conditions for their aquatic pets. With a sleek and slim design, this temperature probe is perfect for discreetly monitoring water temperatures without disrupting the aesthetic of the aquarium.

Right.
Sounds amazing without saying anything!  Viva la Future!