Features High quality material:The electric bell is made of stainless steel percussion disc surfaces, better anti‑rust effect.Long service life, with hex screws inside to strengthen the welding and welding more firmly. Loud alarm:The electric bell is equipped with thick electric hammer and stainless steel hammer head make it more powerful and sound better when striking the bell. Great ability:The electric bell has a copper wire coil inside, the coil is large and uniform, using pure copper wire for durability and stable performance. Widely used:With strict quality control and quality assurance, high safety factor, the electric can be used with peace of mind,which is suitable for school,hotel,office and so on. After-sales service:If you have any questions to our electric bell, please contact customer service. Your satisfaction is our greatest motivation. Specification:Item Type: Electric BellMaterial: Stainless steel Rated Voltage: AC220V Current: 100 A Power Consumption: 20W Bell Bowl Diameter: Approx. 150mm / 5.9in Package List:1 x Electric Bell Note:1. The altitude does not exceed 2000 meters.2. The humidity of the surrounding medium is not higher than +40 degrees and not lower than ‑25 degrees, the relative temperature of the air is not more than 90% (the suitable temperature is +25 degrees)3. Use in an environment where there is no flammable and corrosive gas or conductive dust in the surrounding air, and there is no significant shaking and shock vibration.4. It can work normally when the rated voltage is 10%, the best time is 30‑40 seconds, and the time of a single ringing should not exceed one minute, otherwise it will burn out easily.5. The pollution level is 2 and the installation category is ‖. Package List 1 x Electric Bell