Resonance Frequency : 3.0±0.5KHz Operating Voltage: 3-28VDC Rated Voltage: 12VDC Current Consumption: 30mA Max.at Rated Voltage Sound Pressure Level: 80dB Min at Rated Voltage at 10cm Tone Nature : Constant sound Operating Temp: -40~+85°C Weight: 4g Housing Material: ABS