Deerc DE51 - Operation; Lights and Speed Adjustment; Using Trimmer Controls for Stability

Press the lights switch button once to turn on or off the power
indicator of the helicopter.
If while the helicopter is rotating to the right without controlling,
then press the left trim button until the helicopter stop rotating.
Press the speed switch button once to switch the speed of the
helicopter. The remote will switch at a fast speed when you hear
the “Di Di” sound, and the remote will switch at a slow speed
when you hear the “Di” sound.
Lights on/off
Speed switch
Left trim

< OPERATION >
4. Lights Switch and Speed Switch
5. Trimmer Function
If while the helicopter is rotating to the left without controlling,
then press the right trim button until the helicopter stop rotating.
Right trim