Application: Siren and alarms is widely used in fire fighting, car, office, residential building and security equipment etc Specifications: Dc resistance: 19 ohm +/- 10% Impedance: 100 ohm +/- 25% at 1khz Frequency range: 2000hz +/- 20% S.P.L: >= 90db at 10cm 2000hz 9vp-p square wave >= 95db at 30cm 1000hz 12vp-p square wave Export standard carton
