4 Inch 12V Metal Electric Alarm Bell, 100dB Fire Control Security Bell, Internal Strike Type Wired Siren for Fire Alarm, Door Alert, School & Factory Use
High quality-Hard metal shell, not easy to deform.Pure copper electromagnetic coil.Strong tapping, stable and long service life.
Strong resistance-The surface is coated with electroplating technology to make the material more anti-corrosive and less prone to rust and .
Working conditions-Work continuously for less than 10 minutes.No flammable or corrosive gas or conductive dust. Without significant shaking and shock vibration.
Sound transmission- the sound reaches 100db, and it is farther and safe. Enev it is used in a factory, everyone can hear
Easy to install-Portable wired power supply, easy to install, can be installed on the wall, ceiling and other installation methods.