![background image](http://html.mh-extra.com/html/bluebird/ef501/ef501_user-manual_2777322014.webp)
3 Overview
8
3.2.4 Bottom and Top
EF501
1
2
3
4
5
EF501R
1
2
3
4
5
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
Secondary
microphone
Acts as sub microphone, removing noise and echoes.
4
Primary microphone Captures sound for calling, video recording, and speech recognition.
5
Charging contacts
Allows the device to be charged.