piezo buzzer,piezoelectric buzzer,buzzer sound,magnetic buzzer,electric buzzer,electronic buzzer,alarm buzzer Rated Voltage:12Vp-p Square WaveMax.Allowable Voltage:30Vp-p Square WaveMax.Rated Current:4mA at 4.0KHz/12Vp-p Square WaveMin.Sound Pressure Level:85dB at 4.0KHz/12Vp-p Square Wave/10cmResonant Frequency:4.0±0.5KHzOperating Temperature:-20~+60CWeight:2.4g