Time to change the batteries!

On Thursday evening we were in bed and just falling into a deep sleep when our smoke detector sirens started going off. Luckily nothing was on fire. It was sort of weird. First the one in my office went off on the main floor of our house. Then the one in Dennis's office went off on the second floor. And finally the one in our 3rd bedroom went off. They would go off for about 20 seconds, stop, and then start up again after 5 minutes. We ended up going to my in-laws house at about 11:30pm to borrow some 9 volt batteries. They all went off one last time and that was about it for the night. We still aren't sure if it was even caused by the batteries, but as a friendly reminder, it is always good to change your smoke detector batteries anyway. So if no one else has reminded you, consider this your official notice. (Also, keep some 9 volts on hand in case the batteries do run out - that repetitive chirping sound can be really annoying especially when you are trying to sleep!)