1 Pure copper electric coil, with intermittent, no electromagnetic interference, powerful striking, stable performance and long service life. 2 The shell is made of cast iron, which is sturdy, not easy to deform, antirust and durable. 3 Non-sparking bell, rigid material and large hammer, provide louder sound, longer transmission. 4 Widely used, suitable for factories, institutions, schools, railways, docks and other public places. 5 Simple installation, no need complicated tools, convenient for using.

What's in the box
1 x 8in Electric Bell Ringer Fire Alarm