Swann Magnetic Window/Door Alarm-SW351-MDA - The Home Depot


Model # SW351-MDA

Internet # 202542556

Magnetic Window/Door Alarm

Swann Magnetic Window/Door Alarm

This item has been discontinued.
The Home Depot no longer carries this specific product.

$9.99 / each


Model # SW351-MDA

Internet # 202542556

This window/door alarm has a powerful siren of 120dB+ when window or door is opened. The alarm is easy to install operate and comes in a Compact design. The Alarm activated when two panels are separated.

  • Powerful siren 110dB+ sounds when window or door is opened
  • Easy to install - self-adhesive pad supplied, no tools required
  • Easy to use with operating mode indication
  • On/Off switch concealed under panel
  • Compact design for discreet positioning near entry points
  • The alarm is activated when the 2 panels are separated
  • Requires 4 x "LR44" batteries


Assembled Depth (in.)  1.2 in  Assembled Height (in.)  2.4 in 
Assembled Width (in.)  0.6 in  Product Depth (in.)  1.2 
Product Height (in.)  2.4  Product Width (in.)  0.6 
Alarm Sensor Type  Door and Window  Alarm Sensor Type  Door,Window 
Audio Alert/Siren  Yes  Battery Back-Up  No 
Indoor/Outdoor  Indoor  Number of Sensors Included 
Product Weight (lb.)  0.2 lb  Range (ft.) 
Returnable  90-Day  Surveillance Features  Audio Alert/Siren 
Surveillance Included  No additional components or accessories are included  Visual Alert  No 
Wired or Wireless  Wireless 


Rated 4.2 out of 5 by 10 reviewers.
Rated 5.0 out of 5.0 by It works well for safety. Our son has Autism. Our son has Autism and it is very helpful to know if he opens his door in the middle of the night and is wondering around. We put one on his bedroom door and front door leading to the street. January 14, 2014
Rated 5.0 out of 5.0 This product is great! Small and easy to put up. Alarm is loud enough and gives you piece of mind. It is worth every penny! September 13, 2011
Rated 4.0 out of 5.0 by Simple to install and easy to use. These alarms were easy to install and they are easy to use however you have to slip the face plate off to turn it on and off so there is a risk of losing that. Otherwise the sound is loud enough to serve its purpose. September 13, 2011
Rated 5.0 out of 5.0 by Great Protection for a Garage Window I have a window in my garage that I wanted to ensure no one enters. I don't have an alarm system in my house nor do I live in a scary neighborhood, but I bought it for peace of mind. It installed in about 1 minute. It hasn't gone off (nor should it have) and I haven't had any issues. The double sided tape they provide is a little on the cheap side so I wonder how long until it falls off and causes it to alarm. December 31, 2014
Rated 5.0 out of 5.0 by Great Value For Money I would highly recommend this. This simple alarm is very effective and when coupled together with other swann products makes a very good home defense solution. March 6, 2013
Rated 2.0 out of 5.0 by Item was sent defective Unfortunately, I could not use the product because the batteries were corroded inside. I returned product. This product is not sold in my local Home Depot. I would have to go back online to re-order or go to another location where it is sold in store. I did not feel like being bothered. August 26, 2014
Rated 5.0 out of 5.0 by It Works. This little alarm does exactly what it states it will. June 18, 2013
Rated 3.0 out of 5.0 by Not quite what I was looking for.... I wanted a door alarm that would let me know when my 3-year old was coming in and out of her room. This was not the product for me. It was away too loud. May 17, 2014
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