Electronic Greeting Card, Magnetic Switch Hack

This time I add magnetic sensors to play sound when opening a door. Great for a single door or window security alert. :)
Set of 3 Re-Recordable Sound Modules for Greeting Cards by Invite By Voice: https://amzn.com/B006NFSV2A
Magnetic Switch by Directed Electronics Inc https://amzn.com/B0009SUF08

I later replaced this with a better product for a permanent install. Bigger batteries, lasts for about a year before needing to replace 3 AAA batteries. :)
https://www.amazon.com/gp/product/B00PEYCBPY/

Видео Electronic Greeting Card, Magnetic Switch Hack канала DJDevon3