Model # SW351-MDA

Internet #202542556

Swann Magnetic Window/Door Alarm

Discontinued Swann

Magnetic Window/Door Alarm

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Product Overview

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



Product Depth (in.)
Product Height (in.)
Product Width (in.)


Alarm Sensor Type
Audio Alert/Siren,Audio Alert/Siren
No additional components or accessories are included
Number of Sensors Included
Product Weight (lb.)
Range (ft.)
Wired or Wireless

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Customer Questions & Answers

Does it meet pool alarm door requirements?

Asked by: Sam
No, this does not meet pool alarm door requirements.
Answered by: CommunityAnswer
Date published: 2016-03-26

Installation on non flat doors and windows

Not one of my windows or doors allows for flat, side by side installation. I have to have them at 45 degree angle, and the alarm rings constantly in that position, is not close enough to turn off. I need a system that will read itself as off when there is a tiny distance (2mm but 2 inches better) of the two components apart.
Asked by: face
Answered by: ss
Date published: 2016-04-11

Entry / Exit delay?

Hi! I'm looking for an alarm for our fridge door - it doesn't close properly on its own, and we have left it ajar a few times, spoiling all our food. I need something that has a delay of 15 seconds or more, so it won't go off when we're getting things out of the fridge. Does this have a delay before it goes off? If not can you recommend one that's relatively inexpensive?
Asked by: GiGI
Answered by: ss
Date published: 2016-03-21

Does the alarm keep sounding until manually turned off or door closed?

Asked by: Walter
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Customer Reviews

Magnetic Window/Door Alarm is rated 4.2 out of 5 by 10.
Rated 5 out of 5 by from 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!
Date published: 2011-09-13
Rated 4 out of 5 by from 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.
Date published: 2011-09-13
Rated 5 out of 5 by from 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.
Date published: 2014-01-14
Rated 5 out of 5 by from battery replacement on the walmart website a 10 pack of LR44 batteries is only $2.99, not all that expensive to replace at all
Date published: 2015-08-04
Rated 5 out of 5 by from It Works. This little alarm does exactly what it states it will.
Date published: 2013-06-18
Rated 5 out of 5 by from 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.
Date published: 2014-12-31
Rated 4 out of 5 by from compact , does not take away from sliding door or windows, hides well small,compact , does not take away from sliding door or windows, hides well 4 battery for this unit is a cost one has to think about before buying
Date published: 2013-12-31
Rated 4 out of 5 by from Good protection for the money Easy to install. Good protection for the money. And don't forget to ask for your 10% military discount! (DD 214 comes in handy)
Date published: 2012-08-07
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