… I installed my smoke/CO detectors last night. I bought them because they didn’t look like your usual detectors, they’re square and curved. Figured they wouldn’t stick out as much. They do much more than just warn you that your house is on fire or you are about to suffocate. They beep and they say “Fire, exit now” and “Carbon dioxide detected, move to fresh air” in both English and Spanish.
… But even better they have you set these little switches to match. I had no idea why until I tested the second one – and they both went off. Yup, they’re a SYSTEM. If one goes off, it tells the other one to go off also. Way cool. Now I want to get a dozen more, so I can hear “Monoxido de carbono detectado. Muevase a un sitio con aire fresco.” broadcast throughout the house.