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Databus Hub for M1 Security/Automation Control Systems
Elk M1DBH M1 Databus Hub
Elk M1DBH M1 Databus Hub
Elk M1DBH M1 Databus Hub
Item# 12832
Price: $42.59
Free shipping on orders over $175 - See Details


  • Hub for connecting additional keypads or zone expanders to M1 and M1Gold panels
  • Up to 9 databus connections
  • Interconnect multiple units if more than 9 data lines are needed
  • Works with RJ45 equipped cat5 and cat6 cables

Essential Info

Manage the databus wires in your M1 Gold or M1 Kit control panel with an M1 Databus Hub. When you're ready to expand your system and add more LCD keypads or zones, the M1 Databus Hub designed to makes connections easy. The M1 Databus Hub accepts up to nine RJ45-equipped cat.5 or cat.6 cables, and connects the data A & B lines to and from devices so the databus may be terminated properly. Looking to attach more than nine cables? No problem: two or more units may be interconnected if more than 9 data lines are required.


What's Included

  • M1 Databus Hub M1DBH
  • Resistor terminating plug
  • More Info

    The M1 Databus Hub is pre-assembled on a 3" structured wiring plate, which mounts inside the M1 or M1Gold panel. An RJ45 terminating resistor plug is included; RJ45 8 Conductor Plugs are sold separately. The M1, M1Gold, keypads and the 16 Zone Input Expander are all sold separately.

    The data A & B lines are connected to each device (keypad, zone expander, etc.) along with a "return" wire so that the data returns back to the M1 Databus Hub, which is then used to feed the next device. Effectively, this puts the data lines in a series circuit so that the control communicates with each device in a progression or "daisy chain" fashion, the end of which uses the included resistor terminating plug. This plug places a 120-Ohm resistor across the A & B data return lines coming from the last wired device, effectively terminating the bus.



    Manufacturer Product No.:M1DBH
    Mounting Plate Dimensions:6.5" x 3" x .5"
    Circuit Board Dimensions:5" x 2.5"
    Input Connections:Elevator screw terminals
    Output Connections:9 RJ 45 8-Pin jacks
    Impedance:120 ohms
    Maximum Total Length:4000 feet
    Warranty:2 years, limited

    Important notes:
    Defective exchanges for identical item within Manufacturer’s warranty period.
    Manufacturer contact information: ELK Products Inc, Tel: (800) 797-9355


    23 Ratings
    5 star: 78%  (18)
    4 star: 13%  (3)
    3 star: 4%  (1)
    2 star: 0%  (0)
    1 star: 4%  (1)
    Average Customer Rating
    (23 customer ratings)
    Share your thoughts with other customers
    WILFRIDO -- bakersfield, CA   3/16/2013
    DALE -- spencer, OK   9/5/2011
    Worked like a champ
    CHRISTINE -- roswell, GA   8/11/2011
    If you have multiple keypads, this item makes installation much easier. It essentially changes the wiring layout from daisy chain to star, allowing direct runs from the main panel to each keypad. Also works with the Elk wireless expander.
    JONATHAN -- willow spring, NC   7/3/2010
    Easy to install and made it simple to connect my multiple home runs keypads.
    JOSEPH C. -- crystal lake, IL   6/23/2009
    works great. little overpriced.
    DAVID -- lexington, SC   5/12/2009
    Easy to install and makes adding multiple keypads a breeze. You can use this to add zone expanders also.
    MICHAEL -- phoenix, AZ   1/4/2009
    This hub makes connecting multiple data bus devices very easy.
    Nathan -- tijeras,nm   12/8/2008
    I thought this would be great, I have two keypads, three expansion modules and an Ethernet bridge. I spent more time debugging this one board, before I found out the third port was dead then I did installing the rest of the hardware.
    THOMAS -- sammamish, WA   12/16/2007
    Used the Database Retrofit Hub instead, but Smarthome does not sell that component
    JILL -- lake zurich, IL   5/1/2007
    I'm glad that I bought this little board. You can certainly wire a system without it, but it greatly simplifies it. It also makes it easier to add or remove modules later or for debugging.
    WILLIAM -- san diego, CA   10/13/2006
    A much cleaner way to keep home runs organized and keep track of terminations.
    ALAN -- upper marlboro, MD   9/16/2005
    excellent product, easy to install

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