ECO-WORTHY DUAL-AXIS SOLAR TRACKER CONTROLLER User Manual page 10

V3-Sunshine Limit
In SL mode if the voltage read by the sunlight sensor is lower than V3, the
bracket will auto move to return.
T8-Sun Low Delay
This value is a countdown time for the controller to estimate if the sun goes
down. If the voltage detected gets higher than V3 before T8 countdown is
over, the timing will stop and the return will be cancelled. If the voltage stays
lower than V3 when T8 countdown is over, the controller will start the return.
T9, T10, T11, T12-Sun Low to East/West/North/South
When T8 countdown is over, the bracket will auto move towards
East/West/North/South in order. The value from T9 to T12 means the time
needed to move towards each direction.
Set T9 to T12 correctly and the bracket could return to a proper position in
cloudy days or at night.
Wind Protection(FS)
The code FS is Wind Protection. In this mode the controller will estimate the
wind speed and turn the bracket to a certain position based on the values V2,
T3, T4, T5, T6 and T7 to protect it from strong wind.
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