| 
       Measuring range  | 
    
       22 ... 136 db(A)  | 
  
| 
       Accuracy  | 
    
       Class 1  | 
  
| 
       Frequency range  | 
    
       3 Hz ... 20 kHz  | 
  
| 
       Standards  | 
    
       GB/T 3785.1-2010  | 
  
| 
       Frequency analysis  | 
    
       1/1 Octave band filter: 8 Hz ... 16 kHz  | 
  
| 
       Microphone  | 
    
       1/2"  | 
  
| 
       Data-logging interval  | 
    
       1 s ... 24 h (adjustable)  | 
  
| 
       Measuring functions  | 
    
       LXY (SPL), LXeq, LXYSD, LXSEL, LXE, LXYmax, LXYmin, LXPeak, LXN  | 
  
| 
       X = Frequency weighting: A, B, C, Z  | 
  |
| 
       Frequency weightings  | 
    
       A, B, C, Z  | 
  
| 
       Time weightings  | 
    
       Fast (F) 125ms, Slow (S) 1 sec, Impulse (I) 35 ms  | 
  
| 
       Inherent noise  | 
    
       Microphone: 19 db(A), 25 db(C), 31 db(Z)  | 
  
| 
       AD converter  | 
    
       24 Bit  | 
  
| 
       Sample rate  | 
    
       Standard: 48 kHz  | 
  
| 
       Measuring display  | 
    
       Numerical  | 
  
| 
       Display  | 
    
       160 x 160 pixel LCD with backlight  | 
  
| 
       Memory  | 
    
       4 GB Micro SD card  | 
  
| 
       Interface  | 
    
       USB (Memory readable via software or directly as mass storage)  | 
  
| 
       Voltage output  | 
    
       AC 5V RMS  | 
  
| 
       Alarm  | 
    
       Adjustable  | 
  
| GPS | Yes, GPS receiver for location determination | 
| 
       Power supply  | 
    
       4 x 1.5 V AA Batteries  | 
  
| 
       Battery life  | 
    
       Min. 10 h continuous use  | 
  
| 
       Dimensions  | 
    
       70 x 300 x 36 mm / 2.76 x 11.81 x 1.42" (W x H x D)  | 
  
| 
       Weight  | 
    
       Approx. 620 g / 1.4 lbs incl. batteries  |