The db-307 is a unique pocket-size monitor which provides in a single miniature package, the functions of both a digital sound level meter and a personal noise dosimeter. It computes sound level, Lmax, Lpeak, Laverage, and test duration, as well as noise dose and projected 8-hour noise dose.  It also can be easily programmed before use for 3, 4, 5, or 6 dB exchange rate, 70, 80, 85, or 90 dBA, or no threshold level, and 80, 84, 85 or 90 dBA criterion level.

SPECIFICATIONS:
• Amplitude Range: 45 to 140dBA
• Frequency Response: A-weighted
• Detector Type: True RMS
• Microphone Type: 1/4 inch ceramic with 1 meter cable.
• Sample Rate: 8 samples/second
• Battery Life: 50 hours of continuous operation
• Uses 4 x AA Batteries (not included)
   

Includes the following:

db-307 Meter
Microphone
Windscreen
CL-302 Calibrator (102 dB, 1000 Hz)
SLM Bracket with Split rubber tube for microphone cable retention
Softshell Pouch
Meter Manual
Hardshell Briefcase (not pictured)