High Accuracy LCD Digital Noisemeter Sound Level Meter 30-130dB Noise Volume Measuring Instrument Decibel Monitoring Tester

OverviewSpecifications: Material: ABS plastic Accuracy: ±1.5 dB (based on the standard sound source, 94dB @ 1KHz) Frequency Response Range: 31.5Hz~8KHz Dynamic State Range: 50dB Measurement Range: 30~130dBA, 35~130dBC Frequency Weighting Character: A weight and C weight Dynamic Characteristic of Sound Pressure: FAST 125ms, SLOW 1sec Microphone: 6mm capacitor microphone Digital Display: 4-digit, resolution: 0.1 dB, sampling rate: 2 times/sec Dynamic Scale Display: 1 scale equals 2dB or 1dB, sampling frequency 2 times/sec Dynamic Scale Shift: 30~130dB, 30~80dB, 50~100dB, 80~130dB Overload Display: "UNDER" or "OVER" in display screen AC Signal Output: 0.65Vrms for each shift and full scale, the output of impedance around 600ohm DC Signal Output: 10mV/dB, the output of impedance around 100ohm Power Supply: 3 * 1.5V AAA battery (NOT included) Operating Temperature & Humidity: 0～40℃ / 32～104℉ (10%～80%RH) Storage Temperature & Humidity: -10～60℃ / 14～140℉ (10%～70%RH) Item Size: Approx. 215 * 64 * 27mm / 8.46 * 2.52 * 1.07in Item Weight: Approx. 178g / 6.29oz Package Weight: Approx. 336g / 11.87oz Package Size: Approx. 23.3 * 18 * 5.5cm / 9.18 * 7.09 * 2.17in