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This Quest Electronics M-28 Dosimeter is in good condition and excellent working order. All of the buttons function well and the display is clear and easy to read. The metal chassis has some scratches and chips in the paint. This unit runs on one 9V battery (not included). The microphone and windscreen are also in good condition. Quest Electronics M-28 Noise Logging Dosimeter Quest Electronics M-28 Microphone We are also providing a 30 day warranty on this item. You can click the thumbnails below to view a larger version of the picture. Accumulates noise dosimetry data. Accumulates peak and maximum levels. Accumulates 1-minute histograms or 10-second histograms with peak or maximum levels if desired. Stores 1 dB percent time statistical distribution. Stores 100 exceedance levels. Is housed in a secure dust-proof case. May be clipped on belt or shirt pocket. As an Environmental Monitor: Accumulates up to 120 hours of 1-minute histograms. (If 10-second histograms, peak, or maximum levels are selected, the total time will be less.) The QUEST M-28 Noise Logging Dosimeter is a microcomputer-based sound analyzing instrument for accumulating, displaying, and sending data to serial or parallel printers or computers. The M-28 functions as a personal noise dosimeter, an environmental monitor or as a survey events monitor. |