Wireless Handheld POS System with Android nFC and 58mm Printer Retail Point of Sale Solution
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, hold down the power button for 15 seconds to forcibly restart the device. 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 Click to return to the previous screen. Home screen key Tap to quickly return to the home screen. Menu key Click to quickly view the program running in the background; select the application and swipe to close the app. Type-C interface Can be used to charge the device and debug the developer.