Categories (x) > Cabinets & Racks (x)

Results 51-60 of 191 << < 6 7 8 9 10 > >> 

Product Data Sheets (pdf)...Grounding Bar for 19" Rack

  • Manual... 
  • AlertWerks II Motion Detection Sensor
    (Version 1)

Product Data Sheets (pdf)...Security Doors

Product Data Sheets (pdf)...Wallmount Frames

  • Manual... 
  • 4-Post Rack User Manual
    User Manual for the RM7000A-R2, RM7001A-R2, RM7002, RM7003A-R2, RM7004A-R2, RM7005A-R2, RM7006, RM7007, RM7008A-R2, and RM7010 (Version 3)
  • Manual... 
  • Universal Rail Kit User Manual
    User Manual for the URK1U, URK2U, URK3U, and URKS (Version 1)

Black Box Explains...Dry Contacts

A dry contact, also called a volt-free contact, is a relay contact that does not supply voltage. The relay energizes or de-energizes when a change to its input has occurred.... more/see it nowIn other words, a dry contact simply detects whether or not an input switch is open or closed.

The dry contacts in the ServSensor Contact provide a simple two-wire interface that can be easily adapted to third-party sensors and devices. Because you define what the open or closed condition means, dry contacts are infinitely adaptable.

Use dry contacts to monitor alarms such as fire alarms, burglar alarms, and alarms on power systems such as UPSs. A very common use for dry contacts is to detect whether a cabinet door is open or closed. collapse

  • Manual... 
  • Freedom Rack Waterfall Kit
    (Version 1)
  • Video...Power over Ethernet Explained

    There are a lot of misconceptions and myths surrounding Power over Ethernet (PoE). Learn what PoE is—and is not—and clarify how it can be an important part of your network.

Product Data Sheets (pdf)...Hinged PLEXIGLAS Cover

Results 51-60 of 191 << < 6 7 8 9 10 > >> 


Delivering superior technical support is our highest priority. Depending on the products or services we provide for you, please visit your appropriate support area.


You have added this item to your cart.

Important message about your cart:

You requested more of "" than the currently available. The quantity has been changed to them maximum quantity available. View your cart.

Black Box 1-800-316-7107 Black Box Network Services