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Environmental Meter, Sound Level Meter
SL-4005 Sound Level Meter
3-1/2 Digits, has A & C Weighting, measures in the range of 35 to 130 dB, with data hold and maximum hold, with built in calibration check.
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Environmental Meter, Four-in-One Multi-function Environment Meter
ET-2 Four in One Multifunction Environmental Meter
Four-in-One Digital dB, Lux, temperature and Humidity meter with RS-232C PC Interface cable and software