CE,ROHS,ISO9001 approved.
Factory price.
Rated Voltage:12(24)VDC
Rated Current:20-30mA
SPL(A)1M:≥87dB
Dimension:Φ152mmX56mm
Gong material:iron(special material for fire resistance)
Bells still remain a popular choice for many applications such as schools where they can sometimes be used as a signal for non fire purposes such as class change.