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Vertiv Liebert SN-3C Dry Contact Sensor Module

The Vertiv Liebert SN-3C is a modular dry contact sensor that monitors external contact closures, such as smoke detectors or motion switches, and daisy-chains into Liebert PDUs, Liebert UPS systems, or Avocent ACS consoles for unified facility monitoring.

Overview

The Vertiv Liebert SN-3C brings dry contact monitoring to computer rooms and network closets, letting facility teams tie third-party alarms and switches into their existing Liebert monitoring infrastructure. As a member of the Liebert SN sensor family, it shares the same modular, daisy-chain wiring approach used across the range.

Key Features

  • Reads external dry contact closures such as smoke, motion, or door alarms wired into the sensor
  • Separate input and output ports allow multiple SN sensors to be daisy-chained from one connection
  • Connects directly to Liebert PDUs, Liebert UPS systems with a Unity DP communications card, and Avocent ACS serial consoles
  • Auto-discoverable for quick setup without manual addressing
  • Includes all cables and mounting hardware needed for installation
  • Works standalone or as part of a wider Liebert Nform monitoring deployment

Specifications

  • Brand: Vertiv
  • Sensor Type: Dry contact closure sensor
  • Form Factor: Modular
  • Connectivity: Daisy-chain input/output, compatible with Liebert PDU, Liebert UPS Unity DP, Avocent ACS
  • Color: Black
  • Weight: 1 kg
  • Country of Origin: United Arab Emirates

Why buy from Procure.ae

Procure.ae delivers genuine Vertiv Liebert data center accessories to customers throughout the UAE and GCC, supporting bulk and institutional procurement with reliable regional delivery. Reach out for a quote and our team will help confirm compatibility with your Liebert PDU, UPS, or Nform setup.

FAQ

What is a dry contact sensor used for?
It reports the state of an external switch or alarm, such as a smoke detector or motion sensor, back to a connected Liebert PDU, UPS, or console.

Can the SN-3C be combined with other Liebert SN sensors?
Yes, its daisy-chain input and output ports let you link several modular sensors to one Liebert connection point.

Is any extra hardware required for mounting?
No, all mounting hardware and cabling are included in the box.

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