: The Internal Strike Electric Bell 100db use pure copper electromagnetic coils that are discontinuous and have no electromagnetic interference, no electromagnetic interference, strong tapping force, stable operation, long service life, etcLOUD VOLUME: The bell electric alarm is made of metal, the material is very hard, not easy to deform, the knocking sound is loud, and the spreading range is wide. The sound reaches 100db, the maximum range is 600-800 square meters, farther and saferANTI-CORROSION: The surface of the bell internal strike is electroplated and plated with electroplating technology to make the material more resistant to corrosion and not easy to rust and corrosion. There are three voltage options, 12V / 24V / 220VEASY INSTALLATION: The Electric Fire Alarm Bell uses a portable wired power supply, which is easy to install. You can install it on the wall, ceiling, etc. as needed, which is very convenientUSE OCCASIONS: The high decibel fire alarm bell is a non-sparking electric bell, suitable for fire fighting, emergency evacuation, factory alarms, schools and equipment in public places, in addition to home doorbells, alarms, etc., It can also be used for calling or notification signals Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.