Magnetic Buzzer 9.0×5.5mm 5V 2700Hz  

Electrical Specification:    Type Unit EMB-9055A03 EMB-9055A05     Rated Voltage   V 3 5     Operating Voltage   V 2~5 4~7 *  Rated Current (Max)  mA 30 30 *  Min SPL at 10cm  dB 80 83 *  Resonant Frequency  Hz 2700±300    Operating Temperature  ℃…