-# /dev/ttyUSB0: door key printer
-#
-#
-# Ok
-# Ok, closing now
-# Already closed
-# Already opened
-# close forced manually\nOk
-# open forced manually\nOk
-# Error: .*
-# .* be: unknown command
-# Operation in progress
-# open/close took too long!
-# last open/close operation took to long!
-#
-# commands:
-# c ... close
-# response: "Ok", "Already closed", "Error: .*"
-# o ... open
-# response: "Ok", "Already opened", "Error: .*"
-# s ... status
-# response: "Status: closed|opened|<->, opening|waiting|closing|idle"
-# or "Error: .*"
-# r ... reset
-# "Ok, closing now" or "Error: .*"
-#
-# open/close will only be accepted if Status: ..., idle
-# Reset overrules all other operations in progress
-# s will always be accepted
-#
-###############################################################