Review on 🔥 Kidde Hardwired Smoke & Carbon Monoxide Detector with Voice Alert & Battery Backup – Interconnect Combination Alarm by Justin Frazier

I have been using this carbon monoxide alarm or at least the same model number for 10 years. The first one I installed worked great for about 9 years with no false positives. I'm alive too, so I'm assuming he didn't detect carbon monoxide. I also never had to change the 9 volt battery during this time. Eventually it started beeping because it had expired so I replaced it with the same model. Quality has not changed over the years, there have been no problems. I would recommend this to anyone if you are installing an electrical junction box and have a reliable power supply.