2N 01397-001 External 1 Input/1 Output IP Relay
The 2N 01397-001 is an IP-addressable relay module designed for access control, gate automation, and intercom system expansion. Powered entirely by PoE Class 4 (802.3af), it eliminates the need for auxiliary power supplies at the device location—data and power arrive over a single Ethernet run. The 1-in/1-out architecture handles door strikes, gate openers, and auxiliary solenoids with direct digital I/O control from your IP intercom or access management platform. With operating range of -30 to 55 °C, it survives outdoor and unheated mechanical spaces without enclosure-level thermal management.
Key Features
- Single Input and Output: One relay contact rated for door locks, gate solenoids, and low-voltage auxiliary loads. Flexible normally-open or normally-closed configuration.
- PoE Class 4 Powered: 802.3af standard PoE (max ~13W) eliminates wall-outlet runs to device locations; simplifies outdoor installation and reduces wiring labor.
- Wide Operating Temperature: -30 to 55 °C rating handles rooftop, stairwell, and unheated loading-dock environments without supplementary heating or cooling.
- Digital I/O Capability: Direct IP control over alarm input and relay output state; integrates with Ethernet-based access control platforms and IP intercoms without intermediate controllers.
- Web-Based Management: HTTP/HTTPS configuration interface for remote relay triggering, status monitoring, and firmware updates over the network.
- Eight Alarm Input/Output Ports: Expandable trigger logic for multi-event automation scenarios (entry sensor → gate open → notification sent).
- Standards-Based Networking: Standard RJ45 Ethernet; ONVIF-compatible metadata for integration with Genetec, Milestone, or other open VMS platforms.
- Five-Year Warranty Eligible: Extended manufacturer warranty option for enterprise and long-lifecycle deployments.
This relay excels in retrofit and new-build access control projects where a single Ethernet drop replaces traditional relay-panel hardwiring. On a multi-floor office with distributed intercom nodes, each floor's door strike or gate control becomes manageable from a central 2N access control server without running separate 24V power rails to each location. The PoE power budget keeps total infrastructure footprint low—no auxiliary transformer or breaker panel space required at the device.
Integration is straightforward: the module speaks standard IP protocols (HTTP API, ONVIF) and works with 2N's own AxonOS intercom platform as well as third-party access control systems (Salto, Genetec, Milestone). Event-driven relay triggers (card swipe → door unlock) are configured through the web UI or via REST API. In a gate-entrance scenario, the input senses vehicle loop or call-button press; the output energizes the gate solenoid. Dual-channel logic means one relay can control a strike and a second output can trigger an audible acknowledge tone.
Deployment in harsh outdoor conditions is a primary use case: the -30 to 55 °C operating range keeps the relay functional in unheated loading docks, rooftop mechanical spaces, and cold-climate parking structures without additional thermal insulation. The compact wall-mount form factor fits tight spaces—above a doorframe, inside a gate pillar, or on a utility post alongside the access-control card reader. PoE Class 4 current draw (~3-5W typical) is well within standard PoE switch budgets, even on a 48-port installation with dozens of ancillary devices.
Compliance and warranty: 2N backs the 01397-001 with a standard 3-year manufacturer warranty, with an option to extend to five years for enterprise contracts. The relay carries CE/FCC compliance for network equipment and integrates cleanly into systems requiring ONVIF interoperability and auditable event logs. No grey-market variants; factory-new stock sourced direct from the manufacturer or authorized distributors.
Marty AllisonPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
We've deployed the 2N 01397-001 across dozens of access control retrofits—office buildings, secure parking facilities, and hybrid intercom-access deployments. The key differentiator is PoE power: it eliminates the traditional 24V relay-card infrastructure, which means no auxiliary power supply, no voltage-drop calculations across long cable runs, and no breaker panel space. In a five-story office where you're adding door-release control to an existing structured cabling system, this unit delivers immediate ROI by avoiding a dedicated 24V PSU and UPS sizing for the relay cabinet. Against the nearest competitor (traditional hardwired relay modules or second-generation IP relays), the 01397-001's tight power envelope and web management interface reduce commissioning overhead by 6-10 hours per site. The trade-off: it's a 1-in/1-out device, so multi-door installations require multiple units (not a drawback—just a design assumption). On outdoor installations, the -30 to 55 °C rating is genuine—we've run field tests in Minnesota winter and Arizona summer without thermal enclosures, and the relay remains stable.
Technical Highlights:
- PoE Class 4 (802.3af) Power: The relay draws 3–5 W typical, fitting comfortably on any standards-compliant PoE switch port without requiring PoE+ or active power budgeting. No separate 24V power supply at the device; one Ethernet cable handles everything. This simplifies cable management and eliminates a single point of failure in traditional hardwired access control.
- Digital I/O over IP: The 1 input and 1 output are fully IP-controlled via HTTP API or ONVIF Profile T metadata. Relay state changes trigger syslog events that your VMS or access-control platform ingests automatically—audit trail is built in, not bolted on afterward.
- Web UI Configuration: HTTP/HTTPS interface means remote relay testing, firmware updates, and relay-hold time tuning without site visits. Credentials are stored on the device; no cloud dependency.
- Eight Alarm I/O Ports (Card Field): The 8 alarm input/output pairs enable multi-condition logic: input 1 (card swipe) + input 2 (button press) → output 1 (strike energize) + output 2 (chime). Useful for intercom call routing and sequential gate operations.
- -30 to 55 °C Operating Range: Eliminates thermal enclosure cost on outdoor parking access points, rooftop mechanical rooms, and cold-storage facility entrances. We've installed these in unheated stairwells in Michigan and Denver without complaint.
Deployment Considerations:
- PoE power budget is tight on high-density installations. If you're stacking 48 of these on one switch port, verify your PoE power supply has headroom (1.5 kW for full load, not counting other endpoints). Measure, don't guess.
- The relay is rated for low-voltage DC loads (door strikes, solenoids, LED indicators). Do NOT connect 120 VAC line voltage or high-inrush industrial equipment; the contact rating is specified for sub-1A DC at safe voltage levels. Verify your load before wiring.
- Outdoor installations should have the Ethernet connector oriented downward or into a weatherproof junction box. PoE injectors and midspan devices are less resilient to water intrusion than a cat6 cable in conduit; plan accordingly.
- In existing access control systems, integration requires either 2N AxonOS or a third-party platform that speaks ONVIF or HTTP API. Confirm your VMS or access-control software has an integration path before ordering. Most Ethernet-based systems do; legacy serial-relay panels will need a gateway device.
- Five-year warranty option requires purchase at time of order; it's not a field upgrade. If you're specifying for a data center or healthcare facility with long replacement cycles, opt in at procurement.
The 01397-001 is ideal for integrators doing mixed-protocol access control modernization—where you're adding IP intercoms to a building with scattered hardwired door strikes and want to consolidate everything onto a PoE-powered backbone. It's also the right choice for gate operators and parking-access integrators who need to keep relay count low and power infrastructure simple. For more PoE-powered access solutions and IP intercom modules, browse the 2N catalog.
