Dwyer Instruments' Model SM-100 Digital Sound Meter measures noise levels from 30 to 130 dB

Dwyer Instruments' Model SM-100 Digital Sound Meter is designed for measuring noise levels from 30 to 130 dB with accuracy of ±1.5 dB. Model SM-100 has a frequency of 31.5 Hz to 8 kHz, three different dB ranges and a 1/2-inch condenser microphone. The SM-100 has two frequency weightings: the “A” weighting ranges from 30 to 130 dB, while the “C” weighting ranges from 35 to 130 dB. The four-digit LCD backlit display is engineered to update in 0.5 seconds when the unit is set to fast response. Model SM-100 features data hold, the ability to record maximum/minimum, auto ranging, auto power-off and a range of 50 dB. Each unit includes 9V battery, carrying case, black foam cover to protect the sensor and instruction manual.

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