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Announce Your Guests Your Own Way
Microsystems Development, Inc. MDB-2 iChime Musical Doorbell
Microsystems Development, Inc. MDB-2 iChime Musical Doorbell
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Wiring Diagram
Microsystems Development, Inc. MDB-2 iChime Musical Doorbell
Item# 5069MD
Open Box (Qty:4) $27.53 ea - Add to cart
Free shipping on orders over $50 - See Details


  • Customize your doorbell chime
  • Over 100 built-in songs and sounds
  • Included keyboard allows you to record and program your own song
  • Simple two wire replacement of existing door chimes
  • Wire to your homes AC power or use a 9 Volt Battery

Essential Info

Announce your visitors in style using custom music you created yourself, or by choosing from well over 100 built-in songs, sound effects, and voice phrases. This electronic door chime is designed to replace the normal wired mechanical doorbell in your home. It supports a lighted and non-lighted front door button as well as an optional back door button. It can be set up to play any particular song or sound, or for more variety, it can sequence through any one of twelve groups such as Holiday, Patriotic, Spiritual, Animal Sounds, Classical, and more. Using the built in piano-like keyboard, you can easily program your own song. A song can be programmed note by note, or simply played like a piano, and the doorbell will record and playback your composition. The possibilities are endless. This product is limited only by your own imagination.

This Doorbell has five terminal connections (Front door, Transformer, Back door, Auxiliary speaker 1, and Auxiliary speaker 2) and can be wired to operate on your home's AC current, or battery operated with a regular 9 volt battery (sold separately).


What's Included

  • 1x - Door chime
  • 1x - Diode
  • 2x - Mounting Screws
  • 1x - Installation Manual
  • Specifications

    ManufacturerMicrosystems Development, Inc.
    Manufacturer Product NoMDB-2
    Keyboard TypeMembrane
    Power SupplyAC
    Optional Power Supply9V Battery
    Preprogrammed Audio120 Different Audio Recordings
    WarrantyLimited 2 Year


    Wiring Diagram       
    Wiring Diagram       


    39 Ratings
    5 star: 59%  (23)
    4 star: 21%  (8)
    3 star: 8%  (3)
    2 star: 5%  (2)
    1 star: 8%  (3)
    Average Customer Rating
    (39 customer ratings)
    Share your thoughts with other customers
    JANET K. -- concrete, WA   5/22/2014
    It is everything I expected.
    ALBERT -- new smyrna beach, FL   2/28/2014
    Easy to install, sounds great, like the ability to change especially for special occasions. Very reasonably priced. Haven't loaded my own tunes it yet, but eventually will. recommend it
    Keith -- jupiter, FL   11/9/2013
    very disappointed in the quality of the speaker. . .this thing is a piece of crap. . .stay away
    FRANK-MICHAEL -- mcdowall, Australia   8/19/2013
    Doorbell is great. Very pleased with it and the service. Thank-you.
    TOM -- lindenhurst, IL   8/19/2013
    Excellant as well.
    DONALD -- leominster, MA   6/6/2013
    Works very well for such a low cost item. Would purchase again.
    KATHY -- tucson, AZ   11/19/2012
    works as promised in product info. Sound quality is good also.
    HOWARD -- hong kong, XX   11/12/2011
    very good
    COLIN ROSS -- brisbane, Australia   10/23/2011
    Thank you smarthome for your excellent promtness of service. The doorbell has been installed and is great. Once again thank you for your excellent service. Colin Ross Smith
    DAVID -- san rafael, CA   2/27/2011
    It works as described. A pity that an attached remote speaker cannot also play custom songs.
    JOE -- stites, ID   4/4/2010
    The product appears to be working correctly. It took a very long time to get the replacement for the defective item.
    DUANE -- tampa, FL   3/15/2010
    We tied this to a motion detector in the front entrance and use mainly the Animal sounds - gets some really strange reactions from those coming up to ring the door bell. Also tied in two aux speakers in remote locations so volume is fine. Great gadget!
    TRACEY -- batavia, OH   3/15/2010
    I like my new doorbell very much - a fun product that is functional too!
    LAUREL -- daly city, CA   2/24/2010
    Product arrived quickly and in good shape. It was a gift for someone so I don't know how it worked.
    JOE -- stites, ID   2/14/2010
    The touchpad on the doorbell did not work when I first tried the item. I returned it for replacement.
    TAMI -- longmeadow, MA   12/17/2009
    very fun doorbell!
    DENISE -- orem, UT   11/9/2009
    I love my doorbell! I have been able to program several songs easily. It is so worth the money. Everyone ought to own one of these!
    MARLENE -- stockton, CA   9/6/2009
    Well designed product, instruction book can be stored inside the unit. Lots of songs, tunes, and sounds to choose from. My only issue was with the volume. It varied from song to song and was not loud enough for the size of my house
    JOSEPH -- broussard, LA   8/27/2009
    This was a low sounding piano type doorbell. We didn't care for the sound at all and returned it
    JOHN J. -- cincinnati, OH   8/21/2009
    This doorbell is great! Although there are 100 tunes built in, programming your own tune is a lot of fun, and you can even have two-part harmony! Also, there's a built-in volume control.


    iChime Auxiliary Speaker  Musical Doorbell Auxiliary Speaker     
    iChime Auxiliary Speaker  Musical Doorbell Auxiliary Speaker     

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