Eaton Tripp Lite RELAY-MS Relay/Serial Interface Mini-Slot Card for Eaton 5PX G2, 9SX, and 9PX Lithium-ion UPS Systems

Protect critical systems and maintain uptime with the Eaton Tripp Lite RELAY-MS relay/serial interface mini-slot card. This UPS management adapter gives you reliable remote monitoring and control—allowing security, surveillance, IT and building automation teams to trigger automated shutdowns or alerts when UPS conditions change. The RELAY-MS supports dual-interface operation via a DB9/RS-232 connector, delivering dry-contact relay outputs for alarm panels and PLCs or an RS-232 serial link for direct computer or display connection. Compatible with Eaton 5PX G2, 9SX and 9PX lithium-ion UPS families, it reports key states such as battery low, battery fault, on battery, on bypass and load power. Installation is simple and non-disruptive—no UPS shutdown or load disconnection required—so you can add monitoring to live infrastructure with minimal risk. Backed by Eaton Tripp Lite quality and a 2-year limited warranty, RELAY-MS integrates seamlessly into network monitoring, security, and surveillance environments where predictable power management is essential. Add the RELAY-MS to your UPS management strategy to improve uptime and automate responses—order today to secure your systems.

• Enable remote UPS monitoring and automated safe shutdown to protect servers, security and surveillance equipment
• Dual-interface DB9/RS-232 connector supports dry-contact relay integration and RS-232 serial control for flexible system integration
• Plug-and-play mini-slot card installs without shutting down the UPS, minimizing downtime for critical infrastructure
• Transmits clear status signals (battery low, battery fault, on battery, on bypass, load power) to alarm systems, PLCs or network management tools
• Compact, lightweight design compatible with Eaton 5PX G2, 9SX and 9PX lithium-ion UPS systems for streamlined deployment