Widely used in telephone times, calling devices, time pieces electronic toys, satety equipments, RFID. Specifications SFM-14-I Rated Voltage(V) 12 Voltage Range(V) 3-24 Rated Current(mA) ≤ 10 Sound Output(dB) ≥ 80 Resonant Freq(Hz) 4500± 500 Operating Temp(º C) -20~+60 Storage Temp(º C) -30~+70 Weight(g) 2