The Triplett Model SLM850 Dosimeter measures total noise exposure (%dose) in the work place over an 8 hour period. Fast and easy on-site surveys help determine noise reduction requirements that need to be implemented in accordance with OSHA, MSHS, DOD, ACGIH, ISO85, and ISO90 standards. One user-programmable measurement setup can also be configured and saved. In addition, SLM (sound level meter) mode can be used for the evaluation of environmental noise and assessment of product noise. In SLM mode, you can datalog up to 1000k readings. The meter features A/C/Z frequency weighting, Fast/Slow/Impulse/Peak time weighting, and user settable SPL (dB) and Peak (dB) alarms. The built-in USB interface is used for initial setup of the test parameters. Recorded events can then be uploaded to your PC for further analysis and storage. Includes windscreen, USB cable, software CD, 9V battery, belt clip, and carrying case. 1 year warranty.