Introduction

AXIS P8221 Network I/O Audio Module provides eight configurable input/output (I/O) ports and audio capabilities to a network video system that either does not have such support or require additional support.
Sensors such as a door switch, smoke detector, IR detector or glass break detector-used for triggering an alarm event-can be connected as inputs. Output ports can be connected to control devices or relays, for instance, to open/close doors or turn on/off lights upon alarm.
AXIS P8221 supports two-way audio and has a built-in low power amplifier for small speakers so there is no need for an external preamplifier. It also has phantom power for a balanced microphone.