MacVoices 21069: Kidde Delivers High-Tech Smoke and Carbon Monoxide Alarms Sharon Cooksey of Kidde takes us through the latest features of their home smoke and Carbon Monoxide alarms that can be both hardwired as well as battery operated. Sharon talks about why our escape time from a fire has dropped in recent years, how their alarms communicate with each other to give you the time you need, and why you need to replace your smoke detectors on a regular basis for reasons that you probably didn’t know about.