Precision integrating sound level meter meeting IEC type 1 standard. Complete with type NX-04 single octave filter module. A, C, and flat weightings. Measurement range with a weighting 25 to 130 dB (a). Measurement functions Lp (Spl), Lmax, Leq, Lae, Lx. Time weightings fast, slow, inpulse, 10ms, peak hold. Leq time from 10 seconds to 100 hours. Inbuilt memory for up to 9000 readings (Lp). AC output 1V RMS and DC output 3.5 V at full scale. RS-232C interface. Continuous operation on batteries for 12 hour. AC adaptor included. Octave filter range 31.5 to 16000 Hz in 10 bands.
