Measuring Range : 30 ~ 130 dBA, 35 ~ 130 dBC — Accuracy : ± 1.5dB — Resolution : 0.1 dB — Display : 4 Digit display — Frequency Response : 31.5Hz ~ 8.5KHz — Measuring Level : 30 ~ 130, 40 ~ 90, 50 ~ 100, 60 ~ 110, 80 ~ 130 — Frequency weighting : A & C — Time Weighting : FAST / SLOW — Sampling rate : 2 times / second — Microphone : ½ inch polarization capacitance microphone — AC / DC output — Max reading — Overload indication : OVER / UNDER — Low battery indication — Power Supply : 4 x 1.5V AA or DC 6V 100mA adapter — Dimension : 70 x 35 x 256 mm — Weight : Approx. 308g (including battery) — — — — — AC Output : 0.707Vrms at FS output impedance aprox. 600 ohm DC Output : 10mV / dB, output impedance approx. 100 ohm Bar Graph : 50dB scale at 1dB step for monitoring current sound pressure level display sample rate : 20 times / second AC & DC output for frequency analyser level recorder, FFT analyser, Graphic recorder etc. GENERAL SPECIFICATIONS : Sound Level Meter has been designed to meet the measurement requirement of noise engineers, noise quality control & health prevention in various environments, such as noise measurement in factory, Office, Traffic Road, Family & all other noise measurement applications. — Accessories : User Manual, battery, Tripod mounting screw, Windscreen & Carrying case