Description
The Extech 407744 professional 1kHz, 94dB sound calibrator for 0.5-inch or 1.0-inch microphones calibrates and verifies the performance of the sound level meter. Battery test position with status LED indicating whether the battery is charged. The durable die-cast aluminum housing generates a 1 kHz sine wave at 94 dB with an accuracy of 5% (frequency) and ±0.5 dB (94 dB). Complies with IEC 60942 1997-11 standard. Includes two 9 V batteries, carrying case, and screwdriver.
Ref. 407744