Specifications

⚫ Sleep is designed to prevent the electrical level of battery from being drained when the
voltage of external power supply is below a certain value. Low-voltage protection is added to
keep the electrical level of battery from being drained after the car key is off.
⚫ Car key is on: low-voltage protection is enabled. When detecting the current voltage is
below the protection voltage, the device enters the standby mode (MCU works while the host
doesn’t work). The device wakes up after the voltage is restored.
⚫ Car key is off: low-voltage protection is enabled. When detecting the current voltage is
below the protection voltage, the device enters the off mode (the device doesn’t work). The
device won’t be awaken after the voltage is restored.
⚫ when the low voltage protection function is not enabled, 7V is taken as the criteria for
low voltage protection by default (low voltage protection will be triggered when the voltage is
lower than 7V). As for the car key (whether it is on or off), its also fits the description mentioned
above.
3.1.6 User Management
⚫ The device has an administrator by default and the administrator cannot be deleted. To
edit the administrator, the user can only modify the login password.