Installation guide

AXIS P33-VE Series Installation Guide Page 13
I/O Connectors
• I/O terminal connector - Used in applications for e.g. motion detec-
tion, event triggering, time lapse recording and alarm notifications.
In addition to an auxiliary power and a GND pin, it provides the
interface to:
• 1 transistor output - For connecting external devices such as relays
and LEDs. Connected devices can be activated by the VAPIX® Application Programming
Interface (API), by the output buttons on the Live View page or by an Action Rule. The out-
put will show as active (shown under System Options > Ports & Devices) if the alarm device
is activated.
• 1 digital input - An alarm input for connecting devices that can toggle between an open
and closed circuit, for example: PIRs, door/window contacts, and glass break detectors.
When a signal is received the state changes and the input becomes active (shown under
System Options > Ports & Devices).
Function Pin Notes Specifications
GND 1 Ground
3.3V DC
Power
2 Can be used to power auxiliary equipment.
Note: This pin can only
be used as power out.
Max. load = 50mA
Digital
Input
3 Connect to GND to activate, or leave floating (or
unconnected) to deactivate.
Min. input= - 40V DC
Max. input= + 40V DC
Digital
Output
4 Uses an open-drain NFET transistor with the source
connected to GND. If used with an external relay, a
diode must be connected in parallel with the load,
for protection against voltage transients.
Max. load = 100mA
Max voltage = + 40V DC
Pin1
Pin2
Pin3
Pin4