1
Video recording button
2
PPT group chat button
3
Camera button
5
Interphone switch / Interphone volume adjustment button
6
Photoresistor
7
Infrared light
8
Microphone
9
Camera
10
Interphone antenna
11
White light
12
Headphone socket
13
USB port
14
TF card socket
15
Previous track/Fast reverse/Zoom-out /Menu selection button
16
Menu/Enter/Play/Pause/Return button
17
Next track/Fast forward/Zoom-in/Menu selection button
18
Display screen
19
Recorder status indicator
20
Interphone status indicator
40
EN
21
Recording button
22
Desktop charging contact