# Eaton Relay Card-MS interface cards/adapter Internal Serial

**URL:** https://aio.lv/en/product--eaton-relay-ms--1852461
**Data updated:** 2025-12-29 07:49 (EET)
**Category:** Network Cards
**Manufacturer:** EATON
**Manufacturer code:** RELAY-MS
**EAN:** 743172038135
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 147.49 €
**Prices and availability valid until:** 2026-07-17 23:59
**Price without VAT (21%):** 121.89 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--eaton-relay-ms--1852461

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.07.2026 | free |
| Pickup points | 08.07.2026 | 1.99 EUR |
| Courier delivery to door | 08.07.2026 | 4.99 EUR |

## Summary description

The Eaton Relay Card-MS is an internal serial interface card designed for wired connectivity. It is compatible with Eaton 5P, 5PX, 9SX, 9PX, 9E, 93PM, 93PS, 91PS, 93PS Marine, RELAY-MS models. The card features a multicolour design and dimensions of 66 mm width, 132 mm depth, and 132 mm height, ensuring a compact fit for various applications.

## Long description

The Eaton Relay Card-MS is an internal serial interface card that provides a dry-contact relay connection between an Eaton UPS and a computer or other relay-compatible equipment. Designed for Minislot-compatible Eaton UPS models (including 5P, 5PX, 9SX, 9PX, 9E, 93PM, 93PS, 91PS and 93PS Marine), this compact wired adapter enables automatic shutdown and remote monitoring of UPS status via a connected system.
Advantages
The Relay Card-MS offers a straightforward dry-contact interface for reliable signalling, compact dimensions (66 mm × 132 mm × 132 mm) for easy installation inside compatible UPS enclosures, and compatibility with a broad range of Eaton Minislot UPS models. Its wired serial connectivity ensures stable communication for shutdown and network monitoring tasks, and the lightweight multicolour module is simple to handle during deployment.
Suitable for
Automatic controlled shutdown of equipment connected to Eaton UPS systems
Remote monitoring of UPS status via a relay-connected computer or industrial systems
Integration into environments using Eaton UPS models with a Minislot
Key specifications
Manufacturer: EATON
Model: Relay Card-MS (RELAY-MS)
Form factor: Internal serial interface card
Compatibility: Eaton UPS models with Minislot (5P, 5PX, 9SX, 9PX, 9E, 93PM, 93PS, 91PS, 93PS Marine)
Connectivity technology: Wired
Product colour: Multicolour
Weight: 0.07 kg
Dimensions (W×D×H): 66 mm × 132 mm × 132 mm
EAN: 743172038135
How to use
Install the Relay Card-MS into the Minislot of a compatible Eaton UPS following the UPS manufacturer’s installation procedure. Connect the card’s dry-contact relay outputs to the computer or relay-compatible device using appropriate cabling and terminals. Configure the connected system or monitoring software to recognize relay signals for automatic shutdown and status monitoring. Verify connections and perform a test shutdown and notification sequence to confirm correct operation.
Usage recommendations
Use the Relay Card-MS only with Eaton UPS units that feature a Minislot. Follow Eaton’s installation instructions, ensure proper grounding, and test the shutdown sequence after installation. For integration with servers or industrial control systems, confirm relay wiring and signal polarity with the receiving equipment’s documentation.

## Specifications

| Feature | Value |
|---|---|
| Serial ports quantity | 1 |
| Output interface | Serial |
| Harmonized System (HS) code | 84733020 |

### Ports & interfaces

| Feature | Value |
|---|---|
| Connectivity technology | Wired |
| Internal | Yes |

### Design

| Feature | Value |
|---|---|
| Product colour | Multicolour |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.07 kg |
| Height | 132 mm |
| Width | 66 mm |
| Depth | 132 mm |

### System requirements

| Feature | Value |
|---|---|
| Compatibility | Eaton 5P, 5PX, 9SX, 9PX, 9E, 93PM, 93PS, 91PS, 93PS Marine |

### Operational conditions

| Feature | Value |
|---|---|
| Operating relative humidity (H-H) | 5 - 95 |
| Operating temperature (T-T) | 0 - 40 |

## FAQ

### How much does the Eaton Relay Card-MS interface cards/adapter cost, and is it available for purchase?

The price is 147.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 03.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All EATON products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized EATON service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: connectivity technology, weight, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/1852461/54730818_large.webp