I use a Donner DBM-10, which is relatively inexpensive and works fine, though I am sure there are others that are equally as good if not better.
I find the main challenge with using these devices for piano is that your dominant foot is often already engaged with the sustain, thus forcing you to use your other foot to activate the bluetooth pedal, which can be a bit awkward unless you have very good independent foot coordination. Or sometimes when you have the una corda pedal engaged and are simultaneously using the sustain, you have no feet available.
I actually found it easier to install mine underneath the base of the keyboard stand so that it can be activated by pressing upwards with my knee instead of my foot. This way I can still use it without having to remove my feet from the piano pedals.
This works for me, but you'll probably need to experiment a bit to find the best solution for you.