Just for reference we were contacted by the manufacturer last year and added official support for the ZTS-110 and ZTS-500 in this custom device handler. If you have access to rboy apps you can try it out, it also has support for other features unique to the ZTS series like deadband synchronization, filter replacement status/rest (UI for the classic app) etc. More details can be found on that topic. Here is some feedback from ZTS-500 users.
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