Shoprider PHFW-1020 - Manual (Page 18)

6/25/2004 18
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Push the joystick forward until the controller bleeps.
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Push the joystick in reverse until the controller bleeps.
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Release the joystick, there will be a long bleep.
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The Powerchair is now unlocked.
SLEEP MODE: If the controller is left on and not used for more than
ten minutes, the controller will automatically “go to sleep”. This is
recognized by a slow intermittent flash of the battery indicator lights.
Simply turn the controller off and back on to reset.