Widely used in telephone times, calling devices, time pieces electronic toys, satety equipments, RFID. Specifications SFM-27-D Rated Voltage(V) 12 Voltage Range(V) 6-24 Rated Current(mA) ≤ 12 Sound Output(dB) ≥ 95 Resonant Freq(Hz) 3000± 500 Operating Temp(º C) -20~+45 Storage Temp(º C) -20~+60 Weight(g) 7