Product Name: 22*12.5mm Piezo Buzzer with Two Pin for Microwave Oven Model NO.: BY2240 Brand: Jy Certification: ISO9001, CE, RoHS WORD nChannels: 2.1Channel Usage: Expand Volume, High Fidelity Radiation Mode: Indirect Radiation Type Style: Head-mounted Transducer Principle: IR Earphone Cone: Rubber-edge Transmission Mode: Air-conduction Category: Buzzer Rated Voltage: 12VDC Resonant Frequency: 4.0kHz Min.Sound Pressure Level: Min. 90 at 10cm at Rated Voltage Weight: 3.2g Trademark: JY Transport Package: Standard Export Carton Specification: ? 22 x H12mm Origin: China HS Code: 85318090 Product Description Oscillation FrequencyKHz4.0±0.5Operating VoltageVDC3 ~30Rated VoltageVDC12Current ConsumptionmAMAX. 4at Rated VoltageSound Pressure LeveldBMIN. 90at 10cm at Rated VoltageToneConstantOperating TemperatureºC-20~ +70DimensionmmΦ22 x H12See appearance drawingHousing MaterialPBT( Black )Leading PinPhosphor Bronze(Sn Plated)