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External I/O terminal plug
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5
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X4173
S4151
EXT I/O terminals / External I/O terminal plug (accessory)
Connect the external device to the external I/O terminal plug (accessory) and then connect to the
EXT I/O terminals of the camera.
Note:
• Off, input, and output of the external I/O terminal 2 and 3 can be switched by configuring the
setting. Refer to the Operating Instructions for further information about the EXT I/O terminal 2
and 3 (ALARM IN2, 3) settings ("Off", "Alarm input", "Alarm output" or "AUX output").
<Ratings>
• ALARM IN1 (Auto time adjustment input), ALARM IN2, ALARM IN3
Input specification: No-voltage make contact input (4 V - 5 V DC, internally pulled up)
OFF:
Open or 4 V - 5 V DC
ON:
Make contact with GND (required drive current: 1 mA or more)
• ALARM OUT, AUX OUT
Output specification
: Open collector output (maximum applied voltage: 20 V DC)
OPEN:
4 V - 5 V DC by internal pull-up
CLOSE:
Output voltage 1 V DC or less (maximum drive current: 50 mA)
4 3 2
1
GND
ALARM IN3 (Alarm input3 / AUX output)
ALARM IN2 (Alarm input2 / Alarm output)
ALARM IN1 (Alarm input1 / Auto time adjustment input)
IMPORTANT:
• Install external devices so that they do not exceed the rating of the network camera.
• When using the EXT I/O terminals as alarm output or AUX output, ensure that they do not
cause signal collision with external signals.
Button
