NEW CEM DT-173 High Accuracy Digital Sound Noise Level Data Logger Datalogger with USB Interface

Conforms to the IEC61672-1 Class 2 for sound level measurement NORM and PEAK mode Over range indication A & C frequency weighting Fast (125ms) and slow (1s) time weighting Calibration via software Manual and automatic start modes Accuracy +/- 1.4 dB Frequency range 31.5 Hz - 8KHz Dynamic range 50dB Measuring ranges Auto: 30 -130 dB Time weighting Fast: 128 ms ; Slow: 1 sec Microphone 1/2 inch electret condenser microphone Data memory 129920 samples Battery life about 240 hours LED indicator Green (operating) and Yellow (memory full) LED OS compatibility Windows 2000, XP or Vista