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Alarm Your Doors and Windows Without Big, Unsightly Sensors!
Miniature Magnetic Security Contacts SEC-SM204WH
SECO-LARM SEC-SM204WH Miniature Magnetic Security Contacts
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Installation Diagram Installed Unit Compact Size
SECO-LARM Enforcer SEC-SM204WH Miniature Magnetic Security Contacts
Item# 7352
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  • Half the size of standard magnetic security contacts
  • Protect doors, windows, gun cabinets, jewelry boxes and much more
  • Works with nearly all standard, hardwired alarm systems
  • Sensor is Normally Closed (NC)
  • Contacts are closed when magnet and sensor are together

Essential Info

Enhance your home security system using these magnetic contact security sensors to safeguard your home's doors and windows. The Surface Mount Miniature Contact Switch is half the size of standard magnetic contacts, making them perfect for discretely hiding behind window and door frames. In addition to windows and doors, these small contacts are ideal for alarming safes, gun cabinets, jewelry boxes, china cabinets, or just about anything that opens and closes. White color blends with surroundings. This Miniature Magnetic Contact Switch is also available in a 10-Pack and in Brown, each sold separately.


What's Included

  • 1x - Miniature Magnetic Security Contacts
  • 1x - Self-adhesive tape
  • More Info

    Compatible with most standard, hardwired alarm systems. They stick on with supplied self-adhesive tape, or can be screwed down. Contacts are closed when magnet and sensor are together.



    Manufacturer Product No.:SEC-SM204WH
    Compatibility:Works with nearly all standard, hardwired alarm systems
    Dimensions:1 1/4" long and 1/4" thick, with 1-inch operational gap
    Case Construction:Weatherproof. high-impact ASS plastic with self-adhesive backing
    Magnet:Alnico 5
    Rating:0.1 Amp / 100VDC (max.); 1 Amp / 10VDC (max.)
    Temperature:-15° F to 160° F (-25° C to 70° C)
    Leads:15", 22-guage
    Approval:UL listed

    Important notes:
    Defective exchanges for identical item within 30 days of purchase. After 30 days, please contact the manufacturer.
    Manufacturer contact information: SECO-LARM USA Inc, Tel: (949) 261-2999


    Installation Diagram  Installed Unit  Compact Size   
    Installation Diagram  Installed Unit  Compact Size   


    146 Ratings
    5 star: 76%  (111)
    4 star: 18%  (26)
    3 star: 3%  (5)
    2 star: 1%  (2)
    1 star: 1%  (2)
    Average Customer Rating
    (146 customer ratings)
    Share your thoughts with other customers
    CHRIS -- nashville, TN   8/8/2013
    worked fine. Nice and small.
    ROLAND -- issaquah, WA   7/14/2013
    Great product, N.O. meaning it closes when the magnetic comes in contact with the switch portion.
    JAMES J -- springfield, VA   7/13/2013
    Magnetic Alarm contacts work great, small with self stick tape. For a NC loop.
    TZER LEEI -- glenn dale, MD   7/4/2013
    Works as described. Love the size.
    JAMES J -- springfield, VA   5/23/2013
    I have purchased these before from samrthome. Replacement Alarm contacts work great.
    PHIL -- harrison, NY   4/18/2013
    Item worked exactly as advertised.
    ALAN -- wantagh, NY   12/20/2012
    Quick delivery. Worked perfectly. Seems well made
    STUART R -- detroit, MI   12/6/2012
    As advertised, pprompt delivery.
    CRAIG N. -- altamonte springs, FL   12/3/2012
    Works perfectly!
    ROBERT -- new lenox, IL   10/20/2012
    These switches work as stated and are a great price. I recommend them!
    JOHN R. -- deep river, CT   3/20/2012
    Easy to install and works exactly like it should.
    TINA -- moraga, CA   3/10/2012
    These work just perfectly - like described.
    NOEL -- omaha, NE   2/23/2012
    Received promptly. Works well.
    RODOLFO -- coppell, TX   1/2/2012
    Excellent service and great product quality.
    DON -- angola, IN   12/16/2011
    Worked great. Used them to turn entrance light on and off on a motorhome entrance door.
    JOHN A -- narragansett, RI   11/23/2011
    it worked as it should.
    ARMANDO -- orlando, FL   10/31/2011
    No complaints, Smarthome shipped within a day, Switches are very easy to use, just peel back the film on the tape and stick to window, strong bond, the insulation on the wires is pre-cut, so you don't even need wire strippers, works as advertised
    KENNETH -- raymond, NH   10/29/2011
    The switches work great and the price is right. I had trouble determining how they work from the description. They are normally Open. When the magnet comes close, the switch closes. This is what you would want in a series loop in a security system. The switches remain closed until the magnet is more than one to two inches away from the switch. This is a lot for a switch like this. For my application, this large distance was desirable. I also like their small size. Unfortunately, the shipping charge was much more than the switch itself. I would think, with repackaging, it could be shipped cheaper. I bought 5 switches. This reduced the shipping cost per switch to slightly over $1 each. If you can use more than one, this helps reduce your price per switch since the shipping cost is the same. I would have given it 5 stars if the shipper could ship them cheaper.
    LARRY -- asheville, NC   10/23/2011
    All four magnetic switches worked perfectly and are very useful. They were securely wrapped for shipping and arrived quickly.
    JOHN T -- granbury, TX   8/26/2011
    Quick shipping and works great.

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