RoyalTek GPS SPEED CAMERA WARNING DEVICE RCD-1000 - Manual (Page 6)

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2.2 Hardware Overview
(1) The POI record Button:
Press for more than 2 seconds to record current position.
A short beep sound and blinking LED will inform you that the POI has been successfully store.
Note: The user must use the software to carry out the POI management.
Note: The POI Record Button function will be enabled after GPS is fixed and the Speed Camera
database was successful pre-uploaded into memory.
(2) The Speed limit setting Button:
Press for more than 4 seconds to record current speed of your vehicle. A short beep sound and glowing LED will
inform you that current speed limit has been successfully done. If you exceed the speed limit, the device will beep
until your speed fall below the limit. To revise the speed you can push this button for one second then the speed
limit will change to the current speed. To cancel the setting, press the button for more than 4 seconds again.
Note: The Speed limit setting value will be cancelled after removing the charger power.
(3) Volume control:
Rotate forward and backward to adjust the volume.
2.3 LED Display & Audio Alarm
Front View