SL-4013 Split Type Noise Meter Noise Meter Sound Level Meter       SL-4013 is a high-precision noise meter produced by Taiwan Lu Chang. It has data transmission function and can lock the maximum        Reading, high performance price ratio.        Characteristic& 65306;        With a separate probe, the probe line can extend 1M        Automatic shift and manual shift selection        Maximum and minimum values in peak lock and recording measurements        RS-232 connection interface and AC voltage signal output        A/C frequency weighting and time weighted selection: Fast & slow selection        Conforming to international standards IEC651Type2        Main body: 195x68x30mm        Technical parameter:        Measuring range: 30dB~130dB        Measuring frequency range: 31.5~8000Hz        * 30, to, 130, dB, Auto, range, RS-232.        * 180o, rotary, sensor, shelf.        * Same, function, as, SL-4012.        * Separate, probe, optimum, for, remote, measurementand, low, test, noise, environment,...        * The batteries not included package