Edison School Bell Timer

School bell systems are a critical operational system for virtually all K-12 schools. The ringing of bells during the school day signals the start of the day, class changes and the end of the day. They have been a functional aspect of a K-12 school day since the beginning of classroom education.The ringing of a school bell announces important times to a school's students and staff, such as marking the beginnings and ends of the school day, class period, and breaks.