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AlertWerks ServSensor Expansion Unit, 8-Port Relay Hub

Use to add to the total sensor count of your AlertWerks monitoring system.


Limited Quantity In Stock
Typically Ships within One Week
Lifetime Double Diamond™ Warranty (Standard)

*Required field

Product Features

  • Enables you to add sensors to the AlertWerks™ ServSensor V4E (EME134A).
  • Can be daisychained to other expansion hubs, increasing the potential total sensor count to more than 600.
  • An 8-Port Sensor Hub (EME1X8) and a 16-Port Dry Contact Hub (EME1DC16) are also available.


The AlertWerks ServSensor V4E enables you to integrate environmental sensors and surveillance cameras into one seamless remote monitoring system that watches over your premises. This ServSensor Expansion Unit enables you to add to the total number of sensors on your V4E hub.

Plug up to eight AlertWerks Intelligent Sensors into the RJ-45 ports of the ServSensor V4E. Sensors automatically configure and go on-line, ready to report any status change. Choose from a wide variety of sensors, including temperature, humidity, water, airflow, motion, and voltage.

The ServSensor V4E supports a wide range of up to four analog cameras—your existing security cameras, sophisticated night-vision cameras, outdoor cameras, or low-cost CCTV cameras.

The ServSensor V4E gathers and displays sensor data in its easy-to-use, Web-based user interface. It automatically generates day, week, month, and year graphs for each sensor. The data can be downloaded in a text file for external processing or remotely polled and saved automatically to a PC.

The Notification Wizard enables the ServSensor V4E to notify you of changes in sensor status in real time. Configure each notification by choosing a sensor, selecting the alarm condition, and defining what to do when the alarm is triggered. For instance, you can have the system e-mail you if the temperature in your data center goes over 75° and send you a text message if the temperature continues to climb and goes over 80°.

This product works with:
  • AlertWerks ServSensor V4E (EME134A)
  • ServSensor 8-Port Sensor Hub (EME1X8)
  • DIN Rail Mounting Bracket for Sensors (EMESMB)
  • Questions? Contact our FREE Tech Support.

    NOTE: To rackmount the EME134A plus an expansion hub, order EMEDRMK.

    Tech Specs

    This product works with:
    To rackmount the EME134A and an expansion hub, order EMERDRMK.

    * Technical specification weight is the unit weight. It is not the packaged shipping weight. For shipping weight, please contact Black Box customer service at 877-877-2269.



    Double Diamond Warranty Diamond

    Double Diamond™ Warranty (Standard)

    Take the risk out of equipment purchases with the Double Diamond™ Warranty from Black Box Network Services.

    The Double Diamond Warranty is our warranty that protects your Black Box® brand products* from accidental damage, including drops, water, and power surges.

    The AlertWerks ServSensor Expansion Unit, 8-Port Relay Hub comes with a standard Lifetime Double Diamond™ Warranty (Standard) already included.

    During the warranty period, Black Box Network Services will repair or replace your damaged equipment within one week of receipt at NO CHARGE!*

    Plus, get an Extended Double Diamond Warranty.

    You can also extend your warranty or protect a previously purchased Black Box® brand product** for an additional year—for only 10% of the purchase price! Or, extend your coverage for a full three years for only 20% of the purchase price!

    Ordering an extended warranty is easy: When viewing a product in your shopping cart, just select the one or three years of additional coverage in the dropdown menu under “Warranty Options.” For details, contact Customer Service at 724-746-5500.

    * Warranty subject to certain exclusions and limitations ** Certain products may not be eligible.

    What’s more, we also have a 45-day return policy. Simply call Customer Service for a Return Authorization (RA) number, return your product in new condition and in the original package, and receive a full refund.