100mm 4in Electric Ring Time Bell No-Sparking Signal Alarm Stainless Steel Electric Bell Home Doorbells Internal Strike Bell for School Factory Agencies(220V)

100mm 4in Electric Ring Time Bell No-Sparking Signal Alarm Stainless Steel Electric Bell Home Doorbells Internal Strike Bell for School Factory Agencies(220V)

Sonew

BIG SOUND: The factory alarm bell has a solid metal shell that is not easy to deform. The transmission range is wide, which is safer and more practical. ANTI-INTERFERENCE: The pure copper electromagnetic coil of the electric fire alarm is discontinuous, no electromagnetic interference, strong knocking force, stable operation and long service life. WIDE RANGE OF APPLICATIONS: Doorbells are suitable for industry and mining, government agencies, public places and equipment, and are also used for doorbells, alarm systems, etc.

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