ScarletSound ST-107S Class 2 Sound Level Meter

ST-107S is a  Class 2 Sound Level Meter that meet the standard requirements of IEC 61672-1:2002 Class 2. ST-107S Sound Level Meter (SLM) has wider frequency, built-in preamplifier in microphone and an additional standard of JJG-188-2002 Class 2 as compared to ST-107 SLM .


  • Wide frequency 20 Hz…8 kHz
  • Wide range 30 dB…130 dB
  • Wide dynamic range 100 dB
  • 32G SD card support
  • Parallel A/C/Z & Fast/Slow/Impulse


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

Hassle Free Returns

7 days defects return policy.

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Orders can be shipped on the same day.

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SSL Enabled Secure Checkout.


Item Description
USB interface Yes
Micro SD card

The max support capacity of micro SD card is 4GB; 37,000 data about story space 300KB

Bargraph display Yes
Display 3 1/2 digit backlit LCD display, maximum reading of 2000
Display refresh rate 1 time/ per second
Applicable specifications IEC 61672-1 : 2002 Class2, JJG-188-2002 Class2, IEC60651:1979 TYPE 2, IEC60804:2000 TYPE 2, ANSI S1.4:1983 Type12

1/2” pre-polarized condenser microphone build in preamplifier: 1V/Pa@250HZ, frequency range: 20 Hz~12.5 kHz, Thermal noise: <25 dB(A)

Measurement items

Lxyp, Lxmax, Lxmin, Lxeq, LAE, Lcpeak,RT60

Measurement range 30dB ~ 130dB (A), 35dB ~ 130dB (C), 40dB ~ 130dB (Z)
Dynamic Range 100 dB
Integrate Time Setup randomly,10s, 1m, 5m, 10m, 30m, 1h, 8h, 16h, 24h or set in a given range
Max. peak C sound level measurement 70~133 dB
Time weighting Fast, Slow, Impulse, Peak
Frequency weighting A/C/Z
Frequency Range 20Hz~8KHz
DC output 2Vdc/130dB
AC output 2Vrms/130dB
Battery Life ~30 hours
Battery LR6 1.5V*4 Alkaline batteries
Dimensions 285(L) x 90(W) x 39(H) mm
Weight 500g (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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