Extech Calibrators accommodate Sound Level Meters with 0.5” and 1” microphones. The Calibrator’s die-cast aluminum housing is built for ruggedness and durability. The 407744 provides a 94dB calibration output signal while the 407766 provides both 94dB and 114dB outputs. This professional calibrator, with proper care, will provide years of safe reliable service. Product also comes with OEM calibration.
• LED indicator lights up when power is on
• Level position to select 94 dB or 114 dB
• 1 kHz sine wave at 94 dB/114 dB is generated to an accuracy of 5% (frequency) and ±0.8 dB
• 3 position switch (OFF/94 dB/114 dB)
• Calibrates and verifies Sound Level Meter operation
• For use on Sound Level Meters with 0.5" or 1.0" microphones
• Total Harmonic Distortion (THD) <2% at 94 dB
• Meets IEC standard 60942 1997-11
• Complete with two 9V batteries, carrying case, and screwdriver Model 407744
• Battery test position with battery status LED indicates if battery is good
• 1 kHz sine wave at 94 dB is generated to an accuracy of 5% (frequency) and ±0.8 dB