# Powering On & Off
### **Power On**
Press and hold the power button for 3 seconds or more until the device powers on.
### **Power Off**
Press and hold the power button for 1.5 seconds, then select OK to the pop-up screen to confirm shutdown.
### Storage Mode
The GCS will automatically enter storage mode (deep sleep mode) if no discharge activity occurs for 15 consecutive days (for example, when the device remains powered off).\
To exit storage mode, the device must be connected to a power supply.
### Debugging Mode
An abnormal shutdown occurs when the power button is held for 12 seconds until the screen turns black. In this case, the system does not fully power off and instead enters debugging mode.
To recover, press and hold the power button for approximately 19 seconds until the screen turns on and the device boots normally.
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