I have a hidden door sensor, which ISY understands. But Alexa cannot report its status.
Me: Alexa Is the deadbolt closed?
Alexa: Deadbolt doesn't support that.
Me Alexa what's the status of deadbolt?
Alexa: That's not supported yet.
(I have verified that Alexa has discovered the device, and ISY Portal has given it a spoken name. )
The skill "try this" section suggests that this might work. Is there something that will report status?