Features Has Clear Sound: The volume can get up to 95dB, so the ringing alarm reaches far in the distance for more clear alarming. Stable Working: Adopting copper electromagnetic coil, which enables little interference, high sensitivity and stable work. Practical Uses: Allows for broad application in various places, including home, hotel, warehouse and so on, very practical. Great Material: Using aluminium material with full steel electroplated shell, rustproof and very durable for long using. Easy to Install: With portable wired power supply, can be installed on the wall, ceiling and other installation method. Specification: Item Type: Fire Alarm Bell Product Colour: Red Product Material: Aluminium, steel, copper. Product Size: Approx. 150mm / 5.91in Product Power Mode: External Product Voltage: 220V Product Alarm Volume: 95db Product Processing Technology: Electroplating Package List:1 x Fire Alarm Bell Package List 1 x Fire Alarm Bell