Kidde Carbon Monoxide Alarm Teardown

We break open an expired Kidde carbon monoxide alarm to see what is inside. This particular model was designed to brick itself seven years after activation, since electrochemical CO sensing cells like the one used in this alarm have a finite service life. http://ww1.microchip.com/downloads/en... http://ww1.microchip.com/downloads/en... https://en.wikipedia.org/wiki/Carbon_... https://www.coleparmer.com/tech-artic... Network XIII: Electronics projects, demos, builds, and teardowns for hobbyists and makers. All are welcome.