This equipment has been designed to meet the measurement requirement of Safety Engineers, Health, Industrial Safety offices and Sound Quality control in various environment, which include factory, office, traffic, family, and audio system. It is designed according to the IEC651 TYPE2 & ANSI S1.4 TYPE2 2. Accuracy up to +/- 1.5 dB 3. Measurement range: 30-130 dB 4. With two equivalent weighted sound pressure levels, A and C. 5. Fast & Slow dynamic characteristic modes. 6. AC and DC output for frequency analyzer level recorder, FFT analyzer, graphic recorder etc.