ConstA kind the library does not ship, named by the manifest and decided by the
program's own code; its name and parameters ride in customKind and params.
Watch a falling level and warn before it reaches empty.
Report readings only, with no output and no alerts.
Hold a reading near a setpoint by switching an output on and off.
Warn when a reading changes faster than a limit.
Which control policy a profile applies to each reading.