@startuml
!include <C4/C4_Container>

Person(user_s, "User", "")
Person(user_p, "System administrator", "could be also power user/tinkerer")

System_Boundary(boundary, "SmartHut") {

}

System_Ext(smartdevice, "Smart Device")

System_Ext(sensor, "Smart Sensor")

Rel(user_s, boundary, "Controls smart devices")
Rel(boundary, user_s, "Informs of device status")

Rel(user_p, boundary, "Installs and maintains")
Rel(boundary, user_p, "Reports performance metrics")


Rel(boundary, smartdevice, "Checks if alive")
Rel(boundary, smartdevice, "Controls", "device state, settings")
Rel(smartdevice, boundary, "Transmits state")

Rel(boundary, sensor, "Checks if alive")
Rel(sensor, boundary, "Transmits measurements", "temperature, light, humidity")
@enduml