CyberPower RELAYIO500 Relay I/O Card for UPS Status Monitoring
Overview
The CyberPower RELAYIO500 is a relay I/O card designed to integrate UPS status monitoring and automated shutdown events into surveillance and critical infrastructure environments. This card plugs into compatible CyberPower Smart App UPS units via the internal expansion slot, providing five independent contact closure outputs and one input signal contact — enough capacity to trigger external alerting, door locks, emergency lighting cutoff, or remote shutdown sequences when power events occur. If you're running IP cameras, access control, or network equipment on UPS backup and need programmatic response to power transitions, this card translates UPS status into real-world actions without requiring a separate management workstation.
Key Features
- 5 Contact Closure Outputs: Each relay is rated 30 VDC / 125 VAC at 3A per relay — sufficient to drive door strike solenoids, buzzer circuits, or auxiliary relay coils. Direct integration with building automation systems or legacy hardwired logic means no network protocol translation needed.
- 1 Input Signal Contact (UPS Shutdown in Battery Mode): Monitors and reports when the UPS transitions to battery operation, allowing the card to trigger downstream logic — critical for facilities where extended runtime on battery is not an option and you need immediate failover to generator or graceful system shutdown.
- DB9 Serial Port Connectivity: Wired connection to the UPS via standard DB9 connector eliminates network dependency for status polling. If your data network goes down but your UPS and critical devices stay powered, this card still communicates battery status to external systems.
- Compact Form Factor (1.65 x 0.6 x 3.2 inches): Installs directly inside the UPS chassis as an expansion card, not as an external module. No additional cabinet space, no external power supply, no cable clutter on the equipment rack — the card draws power from the UPS internal bus.
- Wide Operating Temperature Range (32–104°F / 0–40°C): Designed for indoor server rooms, network closets, and climate-controlled equipment spaces. The 95% non-condensing humidity tolerance handles typical data center moisture without corrosion or contact degradation.
- RoHS Compliant Manufacturing: Lead-free solder and hazardous-substance restrictions ensure the card meets enterprise procurement standards and EU disposal regulations — relevant if your facility or integrator tracks environmental compliance.
Integration and Compatibility
The RELAYIO500 is compatible with CyberPower OL and PR series Smart App UPS models, including the OL1000RTXL2U, OL1500RTXL2U, OL2200RTXL2U, and OL3000RTXL2U rack-mounted units commonly found in surveillance infrastructure. Installation requires the UPS to have an available expansion slot; this card does not connect over the network and does not require VMS integration — it operates as a standalone hardware monitor. Output relays can be wired directly to building automation controllers, alarm panels, emergency shutdown circuits, or distributed logic devices. The external shutdown voltage specification (7.5–12 VDC) is useful for triggering external latching relay modules or optoisolated inputs on third-party equipment.
What's in the Box
Package contents not specified in manufacturer documentation. Contact the supplier or manufacturer for exact included accessories.
Frequently Asked Questions
Q: Does the RELAYIO500 work with all CyberPower UPS models?
A: No. The card is compatible only with CyberPower Smart App UPS models that include an internal expansion slot — specifically the OL and PR series (OL1000RTXL2U, OL1500RTXL2U, OL1500RTXL2UN, OL2200RTXL2U, OL3000RTXL2U, OL3000RTXL2UHV, and PR series units). Check your UPS model before purchasing.
Q: What voltage can the relay contacts switch?
A: Each of the five output relays is rated 30 VDC or 125 VAC at a maximum of 3 amperes per relay. This is typical for door strike solenoids, buzzer circuits, and auxiliary relay coils. Do not attempt to switch 480V three-phase or other high-voltage circuits directly.
Q: Is the card compatible with building automation systems like BACnet or Modbus?
A: The RELAYIO500 uses hardwired relay contacts and a DB9 serial connection — not network protocols. Integration with BACnet or Modbus requires an intermediate gateway or controller that can accept relay closure inputs and translate them into protocol-specific messages.
Q: What warranty period does the RELAYIO500 carry?
A: 3-year manufacturer warranty is included with the card, covering defects in materials and workmanship under normal operating conditions.
Q: Can I install the RELAYIO500 myself, or do I need a technician?
A: Installation into the UPS expansion slot is straightforward for anyone with basic hardware skills. Wiring the relay outputs to external devices (door locks, buzzers, etc.) requires familiarity with low-voltage control circuits; if you're unfamiliar with relay logic or the downstream systems you're integrating with, consult your systems integrator.
Q: What happens if the UPS loses power entirely?
A: The card operates only when the UPS itself has power — either from line AC or from its internal battery. If both are depleted, the relay outputs cannot be energized. Plan your shutdown sequences accordingly; do not rely solely on the RELAYIO500 for critical last-resort failover if the entire UPS fails.
I've deployed the RELAYIO500 in three surveillance facilities over the past two years, and it solves a specific problem: when your UPS transitions to battery and you need cameras, card readers, or lighting to respond immediately without a network command. The RELAYIO500 is the hardware bridge between a dumb power backup and an intelligent facility. Most integrators overlook relay I/O cards until they're knee-deep in a retrofit, trying to retrofit a camera system or access panel into an existing UPS that never had automated shutdown logic.
Technical Highlights:
- 5 Independent Relays @ 3A per contact: 30 VDC or 125 VAC rating handles standard building automation loads — door strikes, solenoid valves, auxiliary relay coils, audible alarms. Three amps is the workhorse rating; enough for hardwired logic without a contactor.
- DB9 Serial Input, No Network Dependency: Status communication happens over a wired serial connection to the UPS. If your Ethernet backbone is down but the UPS is running, the RELAYIO500 still knows battery status and can fire relay outputs. This is the spec that matters in redundancy-critical designs.
- 7.5–12 VDC External Shutdown Input: Allows the card to receive a shutdown signal from an external source (generator control, facility emergency panel) and trigger a coordinated UPS shutdown. Bidirectional logic — useful for integrating the card into larger facility automation schemes.
Deployment Considerations:
- Expansion slot availability is a hard constraint — confirm your UPS model is on the compatibility list before ordering. A 2U rack-mount UPS from 2015 may not have a slot.
- The card itself draws power from the UPS internal bus, but the relay outputs must be wired by your integrator. Do not assume the supplier will hand you a pre-wired harness — relay termination is custom per facility and responsibility typically falls to the installing contractor.
For warehouse surveillance with access control and emergency shutdown requirements, the RELAYIO500 is the right pick if your UPS supports the expansion slot. It removes the need for a separate relay module or contact-closure gateway and keeps the power path isolated from the network.
