Piezo Signal Generator Dimensions ? x H: 42 x 22 mm Frequency: 3500 Hz Operating temperature: -35...+75 °C Volume: 72...96 dB @ 1 m Current consumption: ≤12 mA Housing: ABS, Light Grey Tone type: Pulse or Continuous Tone Mounting aperture ?: 32 mm Operating voltage: 5...35 VDC