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8
5. Mounting/installation
a) Connections and controls
FS20 S4UB
TA2
TA1
TA4
TA3
Button 1
Button 3
Button 2
Button 4
black
blue
red
yellow
green
Do not shorten the button cables or
wire-end sleeves! Lengthening is pos-
sible using terminal strips or junction
box terminals.
Buttons TA1 to TA4 on the circuit board
are connected in parallel with the exter-
nal buttons.
Figure 1