Electronics Install New Hard-Wired or Battery-Powered Smoke Alarms diy projects ⋅ July 2, 2019 Replace smoke alarms before they fail. It takes only about 10 minutes to replace a hard-wired type safely. Bookmark(0) Please login to bookmark Do you have 10 seconds? Show this DIY to your friends and fans. Report Content To report this post you need to login first. Like 0 Thanks! You've already liked this No comments diy projects Web: Leave a Reply Cancel replyYou must be logged in to post a comment.