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Eaton

Eaton DB9 RS-232 Relay/Serial Interface Mini-Slot Card for Eaton 5PX G2, 9SX, and 9PX Lithium-ion UPS Systems

$175.00
$138.70 SAVE $36.30
None availableas of 09/03/2026

Ships when available. Free shipping on most items when you spend $100 or more.

Country of origin

  • Origin: China
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Secure checkoutISO 9001:2015 and CMMC certifiedFamily owned since 1982

Free shipping on most items when you spend $100 or more.

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Secure checkoutISO 9001:2015 and CMMC certifiedFamily owned since 1982

Free shipping on most items when you spend $100 or more.

Real people answer: chat with us, email customerservice@colamco.com, or call 1-800-692-8757, Monday to Friday, 8am to 5pm EST.

Overview

View user manual

Mini-Slot Card Works with Eaton 5PX G2 and 9SX UPS Systems

This RELAY-MS relay/serial interface card offers two types of interfaces via a DB9/RS-232 connector: dry contacts (contact mode) and RS-232 serial interface (RS-232 mode). It enables network monitoring of a connected UPS system through a relay-connected computer. Network monitoring helps protect the computer by initiating automatic shutdowns. Supported Eaton UPS systems include the 5P, 5PX, 5PX G2, 9PX, 9PXM, 9SX and 93E series. No UPS shutdown, restart or load disconnection is necessary to install RELAY-MS.

Ready for Operation in 2 Modes

In contact mode (the default setting), RELAY-MS provides UPS information to an alarm system, programmable logic controller (PLC) or computer via dry contacts (relay). Transmitted information includes load power, load on bypass, load on battery, load on utility, battery fault and low battery. In RS-232 mode (RS-232 cable sold separately), RELAY-MS offers an RS-232 interface for connection to a computer or UPS control display unit.

Technical specifications

General Information

Manufacturer Eaton Corporation
Manufacturer Part Number RELAY-MS
Manufacturer Website Address http://www.eaton.com
Brand Name Eaton
Product Name Remote Power Management Adapter
Product Type Remote Power Management Adapter

Technical Information

Proprietary Slot Type Mini Slot
Management Automatic Shutdown & Network MonitoringAutomatic Shutdown

Interfaces/Ports

Serial Yes

Miscellaneous

Compatibility Eaton UPS Series:
  • 5P
  • 5P
  • 5PX G2
  • 9PX
  • 9PXM
  • 9SX
  • 93E
Country of Origin China

Warranty

Limited Warranty 2 Year

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Shipping and returns

Free shipping on most items when you spend $100 or more. In-stock items ship on the next open shipment slot. The buy box above shows the live order-by countdown and the estimated arrival date.

Need to send it back? Start a return online with a Request RMA and our team will take care of you. Keep the original packaging. Items must be returned in the condition received.

Questions about shipping or returns? Chat with us, email customerservice@colamco.com, or call 1-800-692-8757, Monday to Friday, 8am to 5pm EST.