6-4
Using the Audio Playback/Recording* Function Linked to an External Device
* The Audio Recording function is available with a particular model of the VB-C50FSi (→ P.iii).
With the VB-C50FSi, by using the Audio Playback and audio recording* functions in the External
Device Input settings, it is possible to construct a monitoring system that issues audio alert using
previously saved sounds and captures video and audio* in response to external events.
Photographed still images and recorded audio files* are stored in the VB-C50FSi’s memory (→
P.3-28)
* This example uses the VB-C50FSi audio recording function and does not apply to the VB-C50Fi.
Sample Application Combining a Speaker, Microphone and Door-opening Sensor
Each day between 5 pm. and 6 am., this monitoring system emits an audio alert whenever the
door opens and the VB-C50FSi mounted on the ceiling records images shot at 1-second intervals
from 3 seconds before the door opens to 7 seconds after the door closes. It also records audio*
during that period. Install the devices below connected to the respective connectors on the Multi-
Terminal Module.
Installation Example
When the door opens and sensor B mounted on it separates from sensor A, an ON event occurs
at external device inputs IN
+
and IN
–
.
In response to this event, the VB-C50FSi emits the stored audio alert from the speaker with amp,
shoots and records pictures of the doorway and records any audio* picked up by the microphone.
Ethernet
Sensor A
Speaker
with amp
Microphone
VB-C50FSi
Sensor B
Multi-Terminal
Module VB-EX50
Tip
Please refer to the Multi-Terminal Module User’s Manual for how to connect the Multi-
Terminal Module to the VB-C50FSi.
