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ABB STD 420E

ABB STD 420E
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Operation ENG 44
19 Operation
Centralised and decentralised pushbutton mode
(see Fig. 4)
To switch on
Briefly press the pushbutton extension.
The brightness value last set (memory value) will be
automatically set.
To switch on with dark-start function
Hold pushbutton extension down.
The dimmer starts with the basic brightness and dims in
the direction of "brighter" until the pushbutton is released.
To dim
Hold pushbutton extension down.
The dimmer changes the brightness of the connected
lighting unit. The dimming direction reverses each time the
pushbutton is released. At maximum brightness, the
dimmer stops; at minimum brightness, the dimming
direction changes.

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