Resonance Frequency : 2.9±0.5KHz Operating Voltage: 3-20VDC Rated Voltage: 12VDC Current Consumption: 35mA Max.at Rated Voltage Sound Pressure Level: 100dB Min at Rated Voltage at 10cm Tone Nature : Constant sound Operating Temp: -40~+85°C Weight: 17.5g Housing Material: ABS