There are two types of LED lights on the YoGPS Magnetic GPS tracker: the GSM LED and the Power LED.
The GSM LED is located on the top (non-magnetic side) of the GPS tracker and will blink while the device is initializing its first connection with the mobile network. The GSM LED light will power off approximately three minutes after the device is powered on.
The Power LED will light up when the circular button located near the charging port on the GPS device is pressed or when the device is plugged in for charging. It will turn off within three minutes after the device is unplugged.
These LED lights provide information about the status and functioning of the tracker.