Extech 407760 USB Sound Level Datalogger

Records data on an SD card in MS Excel format. High accuracy ±1.4dB meets ANSI and IEC 61672-1 Type 2 standards. 30 to 130dB measurement range with Auto or Manual ranging and an AC analog output for connection to an analyzer or recorder. Measurements are displayed on a large backlit LCD. You can manually store/recall up to 99 readings or datalog up to 20M readings via 2G SD card. The datalogger date/time stamps and stores readings on an SD card in MS Excel format for easy transfer to a PC. User programmable sampling rate: 1 to 3600 seconds. Additional features include: Min/Max, Data Hold, Auto Power Off to conserve battery life, and a built-in PC interface. Complete with six AA batteries, SD Card, windscreen, and hard carrying case. Model SDL600-NIST is also available with a Certificate of Calibration Traceable to NIST.

1kHz 94/114dB professional sound calibrator for 0.5" or 1.0" microphones calibrates and verifies sound level meter operation. Level position switch to select 94dB or 114dB with power on LED indicator light. Durable die-cast aluminum housing generates a 1kHz sine wave at 94dB/114dB to an accuracy of 5% (frequency) and ±0.5dB (94dB)/±1.0dB (114dB). Meets IEC standard 60942 1997-11and comes complete with two 9V batteries, carrying case, and screwdriver. Model 407766-NIST is also available with a Certificate of Calibration Traceable to NIST.