Extech 407766-NIST Sound Calibrator for 94 or 114dB

• Select 94 dB or 114 dB output
• LED indicator lights up when power is on
• Total Harmonic Distortion (THD) <2 % at 94 dB
• 1 kHz sine wave at 94 dB and 114 dB (model 407766) is generated to an accuracy of 5% (frequency) and ±0.8 dB
• Durable die-cast, aluminum housing
• For use on Sound Level Meters with 0.5" or 1.0" microphones
• Calibrates and verifies Sound Level Meter operation

Proposition 65 Warning for California Residents: This product can expose you to chemicals including Benzene, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.