User's Guide

2
Power button
Press in a second： Light up the screen and lock the screen.
Press in seconds： In the Power off state, boot with long press 2-3 seconds；
In the use state, press and hold for 2-3 seconds to select shutdown or restart.
In the dead state, press and hold down the side key - key + key power button one by one, and the device will
restart for 10 seconds.
Volume
Volume up and down (this button can be set as a quick scan button, need application support).
Printer
Used to print receipts in the power on state.
return key