Power Acoustik PTID-7001NBT Operating Manual page 10

NOTE:
Brake Control
It is necessary to connect the Brake Control wire to the Hand-brake switch of the car.
While driving, the TFT monitor will display the alarm picture (see as follows) in order
to ensure the safety.
Under the Rear View Mode, the Brake Control function is no effective.
Auto Antenna Control
Connect the auto antenna control wire AUTO_ANT (see Wiring Diagram); the
antenna will lift when the unit startup; it will descend when the unit turnoff.
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