SL4200 Sound Level Meter

Item No.: SL4200
INQUIRY
Description
  Frequency range:125Hz to 8KHz 
           Measuring range:35-130dB
           Frequency Weighting:A/C 
           Microphone:1/2 inch electret condenser 
           Display:3 1/2 digits LCD display 
           Resolution:0.5dB
           Sampling time:0.5 second
           Time Weighting:FAST 125ms
                     SLOW 1 second 
           Measuring ranges:
   Range 1:(30)32dB to 70 dB
   Range 2:60dB to 100 dB
   Range 3:90dB to 130 dB
           Accuracy:±2dB(94dB@1kHz) 
           Dynamic range:30dB
           MAX hold: "MAX"
           Power supply: one 9V battery (model 6F22)
           Operating environment: 
           Temperature: 0-40℃(32-104°F)
           Relative humidity: ≤90%RH
SL4200(图1)
SL4200(图2)