SOUND LEVEL METER, Auto Range & RS-232 Model : SL-4012 * 30 - 130 dB, Auto range, Manual range. * Frequency & time weighting meet IEC 61672 class 2. * A & C frequency weighting. * Fast / Slow time weighting, Data hold. * Peak hold, Memory (max., min.). * AC output & RS-232. * Size : 268 x 68 x 29 mm.
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