Mini Siren Input Voltage 11 to 16 VDC Operating Temp Range -30 Degrees C to +65 Degrees C Standby Current Less Than 25ma Frequency Range 725 to 1575 Hz Voltage Output 64V Peak-to-Peak Height 1.3 In. Width 6.3 In. Depth 5.7 In. Impedance Depends On Speaker Selected Depends On Speaker Selected Decibels Wattage 100 Standards Meets Class A requirementsfor sound output