Product SKU: A9910
Product Overview
For access control installers who need to scale relay and I/O capacity without adding extra network drops, the AXIS A9910 I/O Relay Expansion Module is a purpose-built solution for expanding compatible Axis systems. Featuring 8 configurable I/O ports with supervised input support, 4 Form C relays, and 4 Modbus sensor ports, it extends the physical control and monitoring reach of a compatible Axis host device. Using multi-drop technology, up to 16 A9910 modules can connect to a single compatible host, providing as many as 128 I/Os and 64 relays through one IP connection. It supports a wide operating temperature range from -40°C to +55°C, making it suitable for plant rooms, electrical panels, secure enclosures, and access control cabinets. Compatible host devices include the AXIS A9210 and selected Axis door controllers such as the AXIS A1210, A1610, A1710-B, and A1810-B. Wall and DIN rail mounting options make it practical across a variety of professional installation environments.
Key Capabilities
Expandable I/O Capacity
Each A9910 adds 8 configurable I/O ports to the connected host, supporting door contacts, request-to-exit devices, PIR sensors, alarm contacts, and external equipment triggers. This allows access control projects to grow beyond the built-in I/O limits of the host device without deploying additional network endpoints.
Multi-Drop Expansion Architecture
Up to 16 A9910 modules can be chained to one compatible Axis host device using multi-drop technology, delivering up to 128 I/Os and 64 relays over a single IP connection. This reduces network cabling effort and simplifies infrastructure planning on large commercial and institutional access control projects.
Supervised Input Monitoring
The configurable I/O ports support four-state supervised input operation when wired with the correct end-of-line resistor configuration. This allows the system to detect tamper conditions, line faults, and intermediate states, which is important for higher-security access control and alarm monitoring applications.
Modbus Sensor Integration
Four Modbus sensor ports allow the module to connect environmental sensors such as temperature and humidity monitors alongside security inputs. This is particularly valuable in server rooms, plant areas, storage facilities, and laboratories where environmental conditions must be tracked within the same security management system.
Encrypted Module Communication
An encryption key is used when pairing the A9910 with a compatible Axis host device, protecting communication between the expansion module and the host. This helps maintain communication integrity in security installations where relay and I/O events must be protected from interference or interception.
Best For
- Large Access Control Installations: Multi-drop expansion supports up to 16 modules per compatible host, making the A9910 well suited to commercial buildings, campuses, and institutional facilities needing substantial relay and I/O capacity without additional IP infrastructure.
- Door, Gate, and Lift Control: Four Form C relays support wet or dry operation, enabling control of electronic locks, gates, barriers, and lift access circuits as part of structured access control workflows.
- Environmental Monitoring Alongside Security: The 4 Modbus sensor ports allow temperature and humidity sensors to feed into the same Axis-managed system, which suits plant rooms, server rooms, and cold storage areas where both access and environmental data need to be managed together.
- High-Security Monitored Zones: Supervised input capability on all 8 I/O ports enables tamper-aware monitoring, making the module appropriate for secure rooms, alarm-integrated areas, and installations where basic open/closed contact monitoring is insufficient.
Why Choose the AXIS A9910
The AXIS A9910 addresses a specific need in professional access control design: expanding physical I/O and relay capacity without multiplying network endpoints. Where a basic I/O expander might offer simple contact inputs, the A9910 combines supervised inputs, Form C relay outputs, Modbus sensor ports, and encrypted communication in a single DIN rail or wall-mountable module. The multi-drop architecture is a practical differentiator, allowing up to 16 units to operate from one compatible Axis host, which keeps structured cabling requirements manageable on multi-door or multi-zone projects. The wide operating temperature range of -40°C to +55°C means it can be deployed in outdoor-rated cabinets and non-climate-controlled equipment rooms where many expansion modules would not be suitable. Backed by a 5-year warranty and available through Security Wholesalers, the A9910 is a well-specified expansion module for Axis-based access control and security automation projects.
Buyer Decision Tips
Confirm host device compatibility before ordering: The AXIS A9910 is designed for use with specific compatible Axis host devices including the AXIS A9210 and selected Axis door controllers. It does not function as a standalone network device. Verify which host device is in the installation, confirm that it supports A9910 expansion, and check the maximum number of modules supported by that specific host before sizing the project.
Plan supervised input wiring at design stage: Four-state supervised input operation requires end-of-line resistors to be fitted at the detection device, not at the module. This wiring configuration must be planned before installation. If the project uses basic two-state monitoring, supervised wiring may not be required, but for alarm-integrated or tamper-sensitive zones the resistor values and input circuit design should be confirmed against the A9910 documentation before cabling commences.
Key Features & Technical Specifications
| Model |
AXIS A9910 I/O Relay Expansion Module |
| Part Number |
02862-001 |
| Product Type |
I/O Relay Expansion Module for Access Control and Security Systems |
| Configurable I/O Ports |
8 configurable input/output ports |
| Supervised Input Support |
Supported on configurable I/O ports; 0-12 V, four-state supervision when wired appropriately |
| Digital Input Range |
0 to max 30 V DC |
| Relays |
4 Form C relays (NO/NC), wet or dry relay support |
| Modbus Sensor Ports |
4 Modbus sensor ports |
| Expansion Technology |
Multi-drop expansion technology |
| Maximum Modules Per Host |
Up to 16 AXIS A9910 modules per compatible Axis host device |
| Maximum Expansion Capacity |
Up to 128 I/Os and 64 relays through one IP-connected host device |
| Compatible Host Devices |
AXIS A9210 Network I/O Relay Module; AXIS A1210, AXIS A1610, AXIS A1710-B, AXIS A1810-B (where supported) |
| Power Input |
12-24 V DC |
| Communication Security |
Encryption key setup for encrypted communication with compatible Axis host device |
| Mounting Options |
Wall or DIN rail mounting |
| Operating Temperature |
-40°C to +55°C |
| Included Accessories |
Connector kit and grounding kit |
| Warranty |
5 years |
Ideal Use Cases
Multi-Door Commercial Access Control
The multi-drop architecture allows multiple A9910 modules to extend a single Axis host to cover many doors across an office building, retail centre, or commercial facility, adding monitored inputs and relay-controlled locks without requiring additional network points for each zone.
Lift and Barrier Control
Four Form C relays with wet or dry support allow the A9910 to trigger lift access restrictions, gate release, and barrier control as part of an access control workflow, making it practical for car parks, loading docks, and multi-level facilities where relay-based control points are required.
Server Room and Plant Room Monitoring
The 4 Modbus sensor ports allow temperature and humidity sensors to connect alongside security inputs, making the A9910 suitable for server rooms, plant rooms, and data centres where environmental conditions and physical access both need to be tracked within a single managed system.
Alarm and Sensor Integration
All 8 configurable I/O ports support supervised input wiring, allowing door contacts, PIR sensors, glass break detectors, and request-to-exit devices to be monitored with tamper detection. This suits security-conscious installations in schools, healthcare facilities, and government buildings.
Industrial and Warehouse Security Expansion
With an operating range of -40°C to +55°C, the A9910 can be installed in non-climate-controlled equipment rooms, outdoor-rated cabinets, and industrial enclosures where standard expansion modules may not be rated for the ambient temperature conditions.
Choosing the Right Model
- Choose this model if: Your Axis access control or I/O system needs additional relay outputs, supervised inputs, or Modbus environmental sensor connections and you want to scale expansion through one IP-connected host using multi-drop architecture rather than adding separate networked modules.
- Choose a different model if: Your installation does not use a compatible Axis host device. The A9910 is not a standalone network module and cannot operate independently. If the project uses a different access control platform or brand, an expansion module designed for that system will be required instead.
- Choose a different model if: You only need a small number of additional I/O points and the host device already includes enough built-in I/Os for the project scope. Confirm the host’s native I/O capacity against project requirements before adding expansion modules.
FAQs
- Can the AXIS A9910 operate as a standalone network module?
No. The AXIS A9910 is an expansion module and must be connected to a compatible Axis host device such as the AXIS A9210 or a supported Axis door controller. It does not have its own IP address or network connection and cannot function independently without a compatible host in the system.
- How many AXIS A9910 modules can connect to one host device?
Up to 16 AXIS A9910 modules can be connected to one compatible Axis host device using multi-drop technology. This configuration provides a maximum of 128 I/Os and 64 relays through a single IP connection, which significantly reduces network cabling requirements on larger projects.
- What does supervised input support mean for an access control installation?
Supervised inputs allow the system to detect more than just an open or closed contact state. When the correct end-of-line resistors are fitted at the detection device, the A9910 can distinguish between normal, open, short-circuit, and tamper states on each input port. This is important for installations where alarm-grade or tamper-aware monitoring is required.
- What types of devices can connect to the Modbus sensor ports?
The 4 Modbus sensor ports are designed for compatible environmental sensors such as temperature and humidity monitors. These are commonly used in server rooms, plant rooms, storage areas, and laboratories where environmental conditions need to be tracked alongside access control events within the same Axis-managed system.
- Is the AXIS A9910 suitable for outdoor or non-climate-controlled enclosures?
Yes. The A9910 supports an operating temperature range of -40°C to +55°C, which makes it suitable for installation in outdoor-rated access control cabinets, electrical enclosures, and non-climate-controlled equipment rooms where temperature variation is a factor. Confirm the enclosure’s IP rating separately for outdoor deployments.
- How is the AXIS A9910 added securely to a compatible Axis host device?
An encryption key is used when pairing the A9910 with a compatible Axis host. This encryption setup helps protect communication between the expansion module and the host, which is important in access control and security environments where relay and I/O events must be protected. The A9910 is available through Security Wholesalers for professional access control projects requiring secure and scalable I/O expansion.
Cabling Considerations
- Power Supply Cable: The A9910 requires a 12-24 V DC power supply. Use appropriately rated DC power cable sized for the installation run length and the current draw of connected relay loads.
- Multi-Drop Connection: Cabling between the compatible Axis host device and each A9910 module uses the multi-drop bus architecture. Confirm cable type, maximum run length, and termination requirements against the host device and A9910 installation documentation before cabling commences.
- Supervised Input Wiring: Four-state supervised inputs require end-of-line resistors to be installed at the detection device, not at the module terminals. Confirm resistor values and input circuit design from the A9910 datasheet before wiring supervised zones.
- Relay Output Cabling: Form C relay outputs support both wet and dry configurations. Cable sizing for relay-controlled loads such as locks, gates, and sirens should be selected based on the voltage and current rating of the connected device. Keep relay output wiring separated from low-voltage signal wiring where possible to avoid interference.
Additional Information
