ScarletSound ST-106 Class 1 Sound Level Meter

ST-106 is a  Class 1 Sound Level Meter that meet the standard requirements of IEC 61672-1:2003. ST-106 Sound Level Meters are suitable for a wide range of applications including environmental noise measurements and occupational noise measurements for commercial, residential, industrial and noise sensitive environments deployment.


  • Powerful CPU
  • Lp/ Leq/ LAE/ Lpeak simultaneously
  • Wide frequency 10 Hz…16 kHz
  • Wide range 30 dB…130 dB
  • Very wide dynamic range 110 dB


  • Noise at work
  • Occupational & industrial hygiene
  • Vehicle noise assessment
  • Construction noise measurement
  • Entertainment noise measurement

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Item Description
USB interface No
 Accuracy  +/- 1.4 dB @ 94 dB / 1 kHz
Bargraph display Yes
Display 3 1/2 digit backlit LCD display
Display refresh rate  1 Hz for text; 10 Hz for graph
Applicable specifications  IEC 61252-1993; IEC 61672-1-2003, ANSI S1, 25-1992; ANSI S1, 4-1983; ANSI S1, 43-1997
Microphone  1/2″ pre-polarized condenser microphone build in preamplifier : -26+2dB (50mV / Pa), frequency range: 10 Hz ~ 16 kHz, heat noise : 20 dB (A)
Measurement items  Lp, Li, Leq, LAE, Lmin, Lmax, Lpeak
Measurement range  30dB ~ 130dB (A) / 35dB ~ 130dB (C) / 40dB ~ 130dB (Z)
Dynamic Range 110 dB
Integrate Time Setup  10s/1m/5m/10m,/30m/1h/2h/4h/8h and user define
Max. peak C sound level measurement 70~133 dB
Time weighting Fast, Slow, Impulse, Peak
Frequency weighting A/C/Z
Frequency Range 10Hz~16KHz
DC output 2Vdc/130dB
AC output 2Vrms/130dB
Battery Life ~8 hours
Battery LR6 1.5V*4 Alkaline batteries
Dimensions 285(L) x 90(W) x 39(H) mm
Weight 550g (including Batteries); 2.5Kg (including package)



Weight 2.5 kg
Dimensions 285 × 90 × 39 cm

This instrument is guaranteed for one year against material or production defects, in accordance with Scarlet general sales conditions. During the warranty period the manufacturer reserves the right to decide either to repair or replace the product.

Should you need for any reason to return back the instrument for repair or replacement take prior agreements with the local distributor from whom you bought it. Do not forget to enclose a report describing the reasons for returning (detected fault). Use only original packaging. Any damage occurred in transit due to non-original packaging will be charged anyhow to the customer.

The warranty doesn’t apply to:

a) Accessories and batteries (not covered by warranty)
b) Repairs made necessary by improper use (including adaptation to particular applications not foreseen in the instructions manual) or improper combination with incompatible accessories or equipment.
c) Repairs made necessary by improper shipping material causing damages in transit. Repairs made necessary by previous attempts for repair carried out by non-skilled or unauthorized personnel.
d) Instruments for whatever reason modified by the customer himself without explicit authorization of our Technical Dept.

Shouldn’t the instrument work properly, before contacting your distributor make sure that batteries are correctly installed and working, check the test leads and replace them if necessary.

Scarlet products are patented. The logotypes are registered. The manufacturer reserve the right to modify characteristics and prices as part of technological developments which might require them.


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