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Application: it is used to calibrate the sound level .
Model:SL5868P
This instrument is compatible with several standards of GB/T 3785,IEC 651 Type 2,ANSIS 1.4 Type 2.It is widely used to test the sound level of environment, mechanic, vehicle,ship and other noise.Fit for industry environment  protecting, working,sanitation, teaching search and other departments.
Display: 10mm (0.4″) LCD (Liquid Crystal  Display)
Function:  LP , Leq  ,LN.
Frequency range: 31.5Hz~8kHz
Measurement range:
              LP:30~130dB (A)
                 35~130dB (C)
                 35~130 dB (F)
             Leq :30-130dB
             LN .: 0-100%
Resolution: 0.1 dB
Accarcy:1dB
Memory:  Maximum value (30groups)
Indicator: Low battery indicator
Alarm: electron
Connector:RS232C
Power supply:  4x1.5v AAA (UM-4 battery
Size: 236 x 63 x26 mm
Weight: 170g  (including batteries)
Standed delivery:
   1.Main Unit---------------1pc
   2.Carrying Case................1pc.
   3.Operation Manual..........1pc.
Optional Accessories:
   1.ND9 sound level meter calibrator
   2.RS-232 and software
   3.External relay