Spec:

• Frequency 1kHz +- 0.2%
• SPL 110dB - 94dB switchable
• Accuracy +- 0.5dB at 20 Grad Celsius and 1013 mbar
• ambient temperature range 0 - 45 Grad Celsius
• Temperature drift < 0.02dB per Grad Celsius
• Temperature drift frequency: < 0.05Hz per Grad Celsius
• Storage temperature range -25 - 55 Grad Celsius (without battery)
• humidity 5 bis 95% relative
• Power supply 9V battery or accumulator
• Housing Aluminium, PVC
• Dimensions Dia. 40mm, Length 132mm
• weight (without battery) 164g

  for download....