* Large LCD display, easy to read. * Hold & Memory record ( max., min. ) * Frequency weighting networks are designed to meet IEC 61672 type 2. * Condenser microphone for high accuracy & stability. * Peak Hold function for stored the maximum value. * Auto range & mamual range. * Warning indicator for over and under load. * A & C weighting networks are conformity to standards. * LCD display for low power consumption & clear read-out even in bright ambient light condition. * Fast & Slow dynamic characteristic modes. * AC output for system expansion. * Used the durable, long-lasting components, including a strong light weight ABS-plastic housing case. * RS232 computer interface. * Build in adj. VR is available for easy calibration. * Compact and light weight plastic housing.