CO2 Monitoring Device

My CO2 detector has been buzzing. I found out that there's a replacement  date on the device when the date is reached the device will beep indicating it needs to be replace. I've contacted the company that installed the security system to get more information and hopefully a replacement device. I will update the blog as I get the info.

Anyone know what happen in theater this week?Looks like ceiling leak of some kind.Hope this is an insurance issue.