Using bells in houses and schools

A: The bells used in houses, schools, and so on are permissible, as long as they do not include anything Haram (prohibited), such as resembling the church bells of the Christians, or have musical sounds. If they include any of these, they will be Haram for that specific reason.May Allah grant us success. May peace and blessings of Allah be upon our Prophet Muhammad, his family and Companions!