I've never heard of it. It looks like it does PH and TDS, as well as something else which I cant figure out. TDS is kind of useless to measure in the aquarium, it is good for RO/DI and even then continuous readings are only useful when used inline, which this does not appear to be able to do.
There is also no price available anywhere to determine if it is an economical alternative to what we are already using.