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F&F STR-421 Instruction Manual page 5

Roller blind controller 2-button

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Switch-on time programing
1. Press and hold the proG button until the green U LED starts
flashing.
2. Press the proG (Start) button again. The controller will start
timing signalled by the green LED pulsing faster.
3. Press the proG (Stop) button again. The controller will save
the measured time. The programming mode is completed au-
tomatically (green LED U illuminates continuously).
If the timer is not started (Start) within 30 seconds of
entering the programming mode, the controller will exit
the programming mode.
The maximum time to be programmed is 10 min.
Attempting to set a time longer than 10 minutes will au-
tomatically exit the programming mode.
Entering the time programming mode is possible only
when the roller shutter motor is switched off.
In programming mode, the controller does not react to
external control signals.
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