Welcome to our store1Pure copper electromagnetic coil with discontinuity and no electromagnetic interference. 2Strong tapping, stable operation and long service life. 3Hard metal shell, not easy to deform, the sound reaches 95db, and it is farther and safer. 4The surface is coated with electroplating technology to make the material more anti-corrosive and less prone to rust and corrosion. 5Portable wired power supply, easy to install, can be installed on the wall, ceiling and other installation methods.Features:Pure copper electromagnetic coil with discontinuity and no electromagnetic interference.Strong tapping, stable operation and long service life.Hard metal shell, not easy to deform, the sound reaches 95db, and it is farther and safer.The surface is coated with electroplating technology to make the material more anti-corrosive and less prone to rust and corrosion.Portable wired power supply, easy to install, can be installed on the wall, ceiling and other installation methods.Choose 12V / 24V / 220V according to the voltage you use.The maximum range is 600-800 square meters.Specifications:Condition: NewColor: RedMaterial:Carbon Steel + Bottom PlasticSize: 6 inches (150mm)Power Mode: ExternalOptional Voltage: AC220V/DC 24V/DC12VAlarm Volume: 95dbSurface Treatment: ElectroplatingPackage List:1 * Internal Strike BellNote:1. It is used in an environment where there is no flammable or corrosive gas or conductive dust in the surrounding air without significant shaking and shock vibration.2. It can work normally when the rated voltage is 10%, and it can work continuously for no more than 10 minutes..wang-edit-text{font-family:'Arial' !important;}.wang-edit-text table {border-top: 1px solid #000;border-left: 1px solid #000;}.wang-edit-text table td,.wang-edit-text table th {border-bottom: 1px solid #000;border-right: 1px solid #000;padding: 3px 5px;}.wang-edit-text table th {text-align: center;}Satisfaction - Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactoryaftersalesservice