Magnetic Transducer 9x5.5mm 2731Hz 

Short Description: Magnetic transducer, 9mm dia, pc mount, top Sound Emission ,unsealed Electrical Specifications:     Type Unit EMT-0901A EMT-0903A EMT-0905A     Rated Voltage   V 1.5 3 5     Operating Voltage   V 1~2 2~4 4~6 *  Rated Current (Max)  mA 80 60 60 *  Min sound output at 10cm  dB 85 85 85     Coil Resistance   Ω      5.5±1 2…