LONG SERVICE LIFE: The electric bell adopts pure copper electromagnetic coil, which has intermittentity, no electromagnetic interference, powerful tapping, stable and long service life. AND STRONG: The bell has a hard metal casing, the material is hard, not easy to deform, the sound is crisp and loud, and the ringtone size is about 100dB, even if it is far apart. CAN CHOOSE THE APPROPRIATE VOLTAGE: This bell can be easily connected directly to a DC power supply and is powered by a portable cable that can be selected from 12V / 24V / 220V depending on the voltage you are using. NOT EASY TO CORRODE: The is spray-coated to make the material more anti-corrosive and less prone to rust and corrosion. It is convenient and quick to install, and can be installed by hanging wall or ceiling. CAN BE USED AS A RINGTONE: The alarm bell is of good quality and easy to install and use. It can be used not only as a fire alarm bell, but also for other purposes, such as a signal bell or a school bell., Weight: 0.440924524 pounds, Manufacturer: Sonew