Its a GHL product the KH Guardian. It reads Alk.
I think it's a pretty nice unit but my only gripe with the GHL approach is that you pay all this money for the Guardian and the if you want the full Monty of tests you have to spend another pile of Cash on the GHL Ion Director. I really wish they had integrated all of this into one package.
No, GHL is KH Director. https://www.aquariumcomputer.com/products/kh-director/
KH Guardian is https://www.coralvue.com/kh-guardian-pro