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Widely used in telephone times, calling devices, time pieces electronic toys, satety equipments, RFID. Specifications SFM-20-A Rated Voltage(V) 12 Voltage Range(V) 3-24 Rated Current(mA) ≤ 20 Sound Output(dB) ≥ 90 Resonant Freq(Hz) 3000± 500 Operating Temp(º C) -20~+45 Storage Temp(º C) -20~+60 Weight(g) 5.5
