# unidirectional
* bidirectional type
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U
Voltage
I
Current
> 20 s
access control
presence
alarming
energy-
management
combined heat
and power station
protocol (VISI+)
energy
lift
cooling
heating
ventilation
temperature
setpoint
lighting
shade control
sanitation
sheduler
(VISI+)
trending
remote alarming
(VISI+)
visualization
(VISI+)
building
traffic control
water treatment
IT / Data
Logistic
system
tele-
communication
graphic editor (VISI+)
> 3 s
> 2 s