How do I enable ACC working alarms?
To activate the vehicle ACC on/off alarm function, send an SMS command “ACC+password” (e.g., ACC123456). The unit will respond with ‘ACC ok’. If you need to deactivate it later, use 'noACC+password'
From the official Gps Tracker 303fg 2 V3 4 Gps Locator manual, page 12
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