Explanation of displays and buttons
4034 200 008 0
Centronic VarioControl VC421
N
L
L
N
Z
entr
al
Z
entr
al
Ind.
Ind.
L
230V/50Hz/4V
A
1
2
4
3
1.
Antenna
2.
Connecting terminals
3.
Programming button
4.
Transmission pilot light
Sample wiring diagram
Caution
•
Risk of injury due to electric shock.
•
Connection may only be performed by a qualified electri-
cian!
•
The device only offers back-of-hand protection, not
touch protection.
•
Do not bend, shorten or lengthen the antenna.
•
Only operate the programming button with an insulated
tool.
16 - en