TECHNICAL SPECIFICATION  | 
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Applied Standards:  | IEC 61252:2002 Personal Sound Exposure Meters, IEC61672-2002,Class 2; ANSI S1.25:1991 Personal Noise Dosimeters  | 
Microphone:  | 1/2 inch prepolarized condenser field replaceable threaded microphone(1/4inch Optional)  | 
Channel:  | Dual channels  | 
Measurement Range:  | 60-143dBA,65-143dBC,70-143dBZ(sensitivity: -53 dB )  | 
Peak C Measuring Range:    | 80 to 143dB  | 
Frequency Range:  | 20Hz to 12.5kHz  | 
Frequency Weightings:      | Parallel (simultaneous) A, C, Z for each channel  | 
Time Weightings:       | Parallel (simultaneous) F, S, I, Peak for each channel  | 
Selectable thresholds :    | 40 to 90dB  | 
Exchange rates:    | 3, 4, 5 and 6     | 
Selectable criterion:     | 70 to 90dB  | 
Dose exposure measurement range:  | 0.01Pa2h ~ 99.99Pa²h  | 
Noise dose measuring range:  | 0% ~ 9999%  | 
Integrating time:  | 1 second ~ 24 hours  | 
Memory capacity:       | Need to customize  | 
Sampling interval of statistical analysis:  | 0.01s  | 
Calibration information:    | Calibration dates, times, and levels  | 
Internal software function:  | Integrating Function,  Statistical Analysis Function  | 
Security:     | Lock via keys  | 
Power supply:    | Rechargeable lithium polymer battery  | 
Battery life:     | Over 16 hours run capacity  | 
| 1/1OCT function | Support,Need to customize | 
| Bluetooth | Need to customize | 
Dimensions:    | 68(H)×68(W)×20(D)mm  | 
Weight:  | 95g  | 
Working Temperature:     | -15℃~50℃  | 
Display:     | 128×64 LCD  | 
Output:  | Mini USB port  | 
Measure Parameters:  | LXYp,  LXeq,T,  LXYmax,  LXYmin,  LN (Note:  X is A, C, Z; Y is F, S, I; N can be 1-99) SEL,  Lex,8h,  Lavg, TWA,  DOSE,  E,  SD,  LXpeak  | 
Precision recording function:  | 32kHz,16bit: High sample frequency, high accuracy. big capacity files for further analysis.  | 
  | 16kHz,16bit: Medium sample frequency, medium capacity files for further analysis.  | 
  | 8kHz,8bit:  Low sample frequency, low capacity files only for monitoring  |