![background image](http://html.mh-extra.com/html/bluebird/ef401/ef401_user-manual_2777320014.webp)
3 Overview
8
3.2.3 Bottom and Top
1
4
2
3
No. Name
Description
1
Barcode scanner
Scans barcodes by emitting a red laser when you press the related button.
2
Headset jack
Connects to the headset.
3
Power button
Turns the device or screen on or off. You can lock the device by turning off
the screen.
4
Charging contacts
Allows the device to be charged.