Features:

• Calibrates and verifies sound level meter operation
• For use on sound level meters with 0.5" or 1.0" microphones
• Conforms to ANSI S1.40-1984 and IEC60942:2003 Class 2
• Durable cast aluminum housing
• Internal battery condition tested continuously
• Built-in battery check

Specifications:

• Output sound pressure levels: 94dB
• Output frequency: 1000Hz Sine Wave ±2 %
• Reference conditions:
  • Temperature: 68° F (20° C)
  • Relative humidity: 65%
  • Atmospheric pressure: 1013 mBar
• Total Harmonic Distortion (THD): <2 % at 94 dB
• Temperature coefficient: ±0.02 dB/° C
• Accuracy: 5% (frequency) and ±0.8 dB
• Operating temperature: 32° to 122° F
• Operating humidity: 0 to 90% RH
• Operating altitude: up to 2000 meters
• Power: (2) 9v alkaline batteries
• Power consumption: approx 7mA DC
• Battery life: approximately 20 hours
• Dimensions: 2.2” diameter x 5.7” length (50 x 145mm)
• Weight: approximately 0.75 lbs. (340g)
  

Supplied with:

• Operating instructions
• (1) 1/2" microphone adapter
• Padded carrying case
• Screwdriver
• 1 year limited manufacturer's warranty