1. Pure copper electromagnetic coil with discontinuity and no electromagnetic interference. 2. Strong tapping, stable and long service life. 3. Carbide shell, not easy to deform, the sound reaches 100db, and it's farther and safer. 4. The is coated with electroplating to make the material more resistant and less prone to and .
5. Portable wired power supply, easy to install, can be installed on the wall, ceiling and other installation methods. Specification: Features: Pure copper electromagnetic coil with discontinuity and no electromagnetic interference . Strong tapping, stable and long service life. Carbide shell, not easy to deform, the sound reaches 100db, and it is farther and safer. The is coated with electroplating to avoid that Making the material more -resistant and less prone to and . 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 are using. Specifications: Condition: Brand new Color: Red Material: Metal Size: 4 inch (100mm) Current mode : External Optional Voltage: 220V/12V/24V Alarm Volume: 100db Treatment: Electroplating Package List: 1 * Fire Alarm Bell