Chimes of Warning

Wondrous item, common

These delicate crystalline chimes always come in pairs. When one chime is struck firmly (requiring an action), it creates no noise but unseen vibrations flow out toward the other chime, provided it is within 3 miles, at a speed of 6 miles per hour. When the vibrations reach the other chime, they cause it to ring loudly with a clear tone that has the same volume as an audible alarm spell. This resounding tone rises in pitch and after 1 round both chimes shatter into nonmagical fragments.