30-130dB LCD Digital Sound Level Decibel Meter Logger Tester Noise Measurement

Features : Fast/Slow time weighting selection. 32000 Reading Internal Memory (Data record function). Max hold function. High accuracy. Bar graph display. AC & DC analogy signal output are available connecting to frequency analyzer level recorder, FFT analyzer and graphic record. White backlight. Over / Under alert function. Time display. Auto-off function setup. Low battery alert. Specification : Sound level range: 30 to 130dB (Auto Ranging) Frequency weighting: A/C Calibration sound source: 94dB @ 1kHz Measurement range: 30~130dBA Accuracy: 1.5dB (Reference sound pressure standard, 94dB@1KHz) Frequency response: 31.5~8.5KHz Resolution: 0.1dB Frequency weighting: A/C Analogy bar graph: 2dB/1 Bar graph Sampling rate: 2 times/second (FAST) 1 time/second (SLOW) AC signal output: 4Vrms/ full barograph, output impedance is approx 600 ohm DC signal output: 33mV/dB Dynamic characteristic: FAST (high speed) / SLOW (low speed) Data storage quantity: 32000 readings Power supply: 4 x AA 1.5V batteries (Not included) Dimension: 23.5 x 6.2 x 3.3cm / 9.25 x 2.44 x 1.30" Package includeds : 1 x Decibel Meter 1 x USB Cable 1 x DC 6V Cable 1 x Soft Case 1 x User Manual Details pictures :