Honeywell5899 - Ademco Magnet and Spacer for 5800 Series (pack of 4)

I moved into a new condo that had a security system already installed. Unfortunately, a lot of the Honeywell 5816 transmitters on windows and doors were missing magnets, so they were constantly faulted when I turned the system on. I bought these magnets to replace missing ones. They worked great for doors, but not all windows. They were too big for my double hung windows. I'll post a product pic so you can see what I mean. I needed a Honeywell Ademco 5899B magnet for the windows. That's a similar magnet to this one, only smaller. I do recommend the smaller ones over these bigger ones. It's a better bet that they'll fit where you need them to fit!Also, you may want to shop around for a better price for this product. When I bought it a couple months ago, the pack of 4 was just under $15. Now it's almost $20. I'm giving the product 5 stars because it does what it's supposed to with no issues. Make sure you check size first though, and go for the 5899B if you need to.

Works pretty well

I had to use the spacers, sometimes two of them, to make this work with my Ooma door/window sensors. Once I ran out of spacers, I made my own using a 1/2" square dowel. You want to make sure that you make the magnet on the same level of the door/window sensor.

There are 4 magnets and bases with screws and double sided tape. Exactly what my ADT sending unit needed. Price was reasonable, shipping was fast and I had them in a few days. No false alarms so far, I'm pleased.

These work great with our Honeywell security system. I got several to place in some of our windows as a second sensor so that we can leave the window open a bit and still be able to arm the alarm.