Floyd bell Audiolarm; 85 dBA (Min.) @ 2 ft.; Medium Loud Beep; 5 to 24 VAC/VDC; 1.4 in. Floyd bell Audiolarm; 85 dBA (Min.) @ 2 ft.; Medium Loud Beep; 5 to 24 VAC/VDC; 1.4 in., MPN: MB-09-531-S(F) GBP 22.34 1