【Electric Alarm Bell】: Stainless steel alarm bell is suitable for industrial and mining enterprises, government groups, public places schools and equipment and equipment supporting exchange 50HZ, for calling or notification signals, in addition to the family for doorbell, alarm, etc. 【100db Volume】: 100db alarm volume can quickly and widely transmit information, the metal casing is not easy to be deformed, the sound of the tapping is loud, and the transmission is farther and safer. 【Plating Process】: rust-proof shell design allows you to use it outdoors for a long time 【Easy to Install】: DC12V / DC24V / AC220V voltage selection for different places 【After Sales Service】: If you meet any problem while using the Product, please contact us before returning it back. We will make a reply in 24 hours to help you to solve the problem.If you are not completely satisfied, and we will provide you Refund and Replaceme, Weight: 0.44 pounds, Manufacturer: Garsent