IPUX ICS1330 Installation Manual page 41

Video & Audio >> Audio
 Camera Microphone In
Select the Enable option to enable the camera's audio function,
so that you can receive the on-site sound and voice from the
camera.
 Camera Speaker Out
Select the Enable option to enable the camera's external
speaker function, so that the connected speaker can play the
sound and voice through the camera.
- Volume: Set the speaker's volume.
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