Extech 407766 Sound Level Calibrator

Product Highlights

• Calibrates and varifies sound level meter operation
• For use on sound level meters with 0.5" or 1.0" microphones
• Durable die-cast, aluminum housing
• 1kHz sine wave at 94dB /114dB is generated to an accuracy of 5% (frequency) and ±0.8dB
• 3 position switch (OFF/94dB/114dB)
• Total harmonic distortion (THD) <2% at 94dB
• LED indicator lights up when power is on

Each Unit Includes

• 9V batteries
• Carrying case
• Screwdriver