Sound Level Meter Sndway SW524 Data Logger SW-524 Noise Tester USB PC

Specification: Measuring range : 30 -130 dB Accuracy: 1.5dB Frequency Response Range: 31.5Hz~8.5KHz Frequency Weighting: A and C weight Response Time: FAST and SLOW Microphone: 6mm capacitor microphone Digital Display: 3.5-digit, resolution: 0.1 dB, Sampling rate: 2 times/sec Storage: 1 stock/sec, storing 17h constantly Data Transfer via micro USB Cable 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: 3x AAA Batteries