The data link layer protocols of the virtual network are said to be tunneled through the larger network when this is the case. One common application is secure communications through the public Internet, but a VPN need not have explicit security features, such as authentication or content encryption. PLC Network I/O. Many different digital network standards exist for PLCs to communicate with, from PLC to PLC and between PLCs and field devices. One of the earliest digital protocols developed for PLC communication was Modbus, originally for the Modicon brand of PLC.

• Eight configurable digital I/O ports
• Superb audio quality
• Speaker output
• Balanced microphone support
• Power over Ethernet
• Control over legacy equipment

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. AXIS P8221 complements Axis network video products and integrates easily into existing network video installations using VAPIX®.

MultiHop Modbus I/O Data Radios. MultiHop Modbus Data Radios extend the range of Modbus or other serial communication networks. Each radio may be set to act as either a master, repeater or slave. Models are available with built in discrete and analog I/O, which can be accessed using the Modbus protocol. Improve network application responsiveness with more efficient data movement and reduced system overhead. Today's multi-port Gigabit Ethernet (GbE) and 10 Gigabit Ethernet (10GbE) network adapters deliver enormous data flows that require advanced server I/O subsystems to avoid performance bottlenecks.

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 in half or full duplex. It 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.

AXIS P8221 has support for Power over Ethernet allowing easy, cost-efficient and reliable installation.

All software isn't compatible with all products, please refer to the data sheets for compatibility information.

AXIS Companion

The market's easiest video surveillance solution optimized for small systems

AXIS Camera Station

The ideal solution to meet the needs for active surveillance of mid-sized installations

Security as a service

A full range of cloud-based surveillance and security services from Axis partners

Specialized software from Axis partners

Customized and specialized solutions from Axis partners, for any system complexity and size

Mounts

AXIS T91A02 DIN Rail Clip 77mm

Illuminators

AXIS T90D20 IR-LED Illuminator

AXIS T90D25 W-LED Illuminator

AXIS T90D40 IR-LED Illuminator

AXIS T90D30 IR-LED Illuminator

AXIS T90D35 W-LED Illuminator

Power Supplies

Audio and I/O

AXIS T8351 Mk II Microphone 3.5 mm

AXIS T8353A Microphone 3.5 mm

Cables and connectors

AXIS Connector A 3-pin 3.81 Straight

AXIS Connector A 6-pin 2.5 Straight

Installation Tools

• Datasheets
• Manuals
• Technical papers
• Dimensions
• Press release
• Declaration & statement

Datasheets

• AXIS P8221 Network I/O Audio Module397 KB English
• AXIS P8221 Network I/O Audio Module397 KB English

Manuals

• AXIS P8221 - Installation Guide2.84 MB English
• AXIS P8221 - User Manual1.4 MB English
• How to assign an IP address and access your device175 KB English

Technical papers

• Notification messages407 KB English

Dimensions

• AXIS P8221 Network I/O Audio Module171 KB English

Press release

• Axis strengthens its network video system offerings25 KB English

Declaration & statement

I-o Data Network & Wireless Cards Driver Download For Windows 10 64-bit

• AXIS P8221 Network I/O Audio Module – Declaration of Conformity78 KB English

I-o Data Network & Wireless Cards Driver Download For Windows 10 Windows 7

Firmware

I-o Data Network & Wireless Cards Driver Download For Windows 10 32-bit

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I-o Data Network & Wireless Cards Driver Download For Windows 10 7