Widely used in telephone times, calling devices, time pieces electronic toys, satety equipments, RFID. Specifications TMB-12-C01 TMB-12-C05 TMB-12-C12 Rated Voltage(V) 1.5 5 12 Voltage Range(V) 1~2 4~8 7~16 Rated Current(mA) ≤ 70 ≤ 40 ≤ 40 Sound Output(dB) ≥ 85 ≥ 85 ≥ 85 Resonant Freq(Hz) 2048 2300± 200 2048 Coil Impedance(Ω )16± 2 40± 5 120± 5 Operating Temp(º C) -20~+60 -20~+60 -20~+60 Storage Temp(º C) -20~+70 -20~+70 -20~+70 Weight(g) 2 2 2