My smoke detectors which are hard wired were chirping over the weekend. After changing all the batteries, they continued to chirp. Since it was the weekend, I did not think I would be able to find an electrician. After serveral calls, David with DEY Electric was nice enough to come out on a Sunday. Not only did he make the service call, he drove to the hardware store and purchased replacement smoke detectors for me. He did not charge me extra for a Sunday service call. He was courtesy, knowledgeable, and had all the work done in a timely manner. I would definitely use him again and recommend his company to friends, and neighbors.