When I configure a 'Sprinkler' type accessory (with an 'Irrigation system' service as the primary service) in the Homekit Simulator or
when I create the same accessory in code using the HAP and then
add that accessory to the home app, some characteristics are missing.
For instance the switch for setting the accessory 'Active'(enabled) doesn't show.
When I use third party apps (like Eve or Home+) everything works as expected.