Extech 407766 94/114 dB Sound Calibrator

- 1 kHz sine wave at 94 dB or 114 dB is generated to an accuracy of 5% (frequency) and ±0.8 dB
- Calibrates and verifies sound level meter operation
- LED indicator lights up when power is on
- For use on Sound Level Meters with 0.5" or 1.0" microphones
- Durable die-cast, aluminum housing