K1KA AC 220V Electronic Buzzer Continuous Alarm Sounder Waterproof Beep Tone Alarm for Home, School, Hospital BlackOOTDTY  Features: 100% brand new and high qualityName: Buzzer AlarmColour: BlackMaterial: ABSVoltage: 220VDiameter: Approx. 30mm/1.18inchSpecification: Material: ABSVoltage: 220VDiameter: Approx. 30mm/1.18inchPackage Includes: 1x Buzzer Alarmnote: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.