Resonance Frequency : 3.5±0.5KHz Operating Voltage: 3-20VDC Rated Voltage: 12VDC Current Consumption: 15mA Max.at Rated Voltage Sound Pressure Level: 90dB Min at Rated Voltage at 10cm Tone Nature : Constant sound Operating Temp: -40~+85°C Weight: 5.5g Housing Material: ABS