That we arrived today, customer explained to us that one of her smoke detectors was beeping constantly. After removing the smoke detector, you can clearly see where it states on the back and once the smoke detector is 10 years old, it will start beeping every 30 seconds letting you know it’s time to replace it. This smoke detector along with all the other smoke detectors in the home were installed in 2014 making the smoke detectors almost 12 years old. We replaced the beeping smoke detector and once that happened, everything stopped beeping. I’m leaving and attached estimate for installing new smoke detectors throughout the house to replace all of the older ones. Unfortunately, all of them are going to start beeping sooner than later because of the age. It was very nice to meet you today! If you or your husband have any questions about the estimates or need anything else in the future, please feel free to give me a call anytime. Thank you, Brandon