@startuml
!include <material/timer_sand>

left to right direction
skinparam defaultTextAlignment center

rectangle "<$ma_timer_sand>\nTimer" as block #LightPink

interface " " as q1
interface " " as q2
interface " " as q3
interface " " as q4

q1 --> block: start
block --> q2: finished
block -u-> q3: blocked
q4 -> block: dt
@enduml
