Our company is a China professional electroacoustic manufacturer factory with 50 years history. in the production of electroacoustic device accessories. We can supply you directly, and of course our prices will also be competitive. In addition to microphone, buzzer、 speaker,、siren/alarm, etc. are our main supplies. Product Name cheap price wholesale transducer piezo buzzer Product picture Characteristics No. Item Specifications 1 Rated Voltage 3.0 Vo-p 2 Operating Voltage 2.0~4.0 Vo-p 3 Rated Current Max.100mA ,at 4000Hz 50% duty Square Wave 3.0Vo-p 4 Sound Output at 10cm Min. 75dB, at 4000Hz 50% duty Square Wave 3.0Vo-p 5 Coil Resistance 12±3Ω 6 Resonant Frequency 4000Hz 7 Operating Temperature -30℃~+70℃ 8 Store Temperature -40℃~+85℃ 9 Net Weight Approx 0.1g 10 RoHS Yes Drawing