ScarletSound ST-107 Sound Level Meter

ST-107 is a Class 2 Sound Level Meter that meet the standard requirements of IEC 61672-1:2002 Class 2. ST-107 Sound Level Meters are suitable to provide as a reference measurements for a wide range of applications that require the measurement of frequency between 31.5Hz ~ 8KHz. For a wider frequency range, you may refer to ST-107S.


  • Fast, Slow, Impulse response time.
  • Frequency range: 31.5Hz ~8KHz.
  • Measurement range: 30dB~130dB.
  • Dynamic range:100dB.
  • A/C/Z frequency.
  • Storage up to 32,000 records.
  • USB interface.
  • AC and DC output.
  • Bargraph display

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Item Description
USB interface Yes
Micro SD card Up to 4G: 37,000 data about story space 300KB
Bargraph display Yes
Display 31/2  digit backlit LCD display, maximum reading of 1999
Display refresh rate Sampling : 2.5 times/second
Applicable specifications IEC 61672-1 : 2002 Class 2
Microphone 1/2 inch Electrets condenser microphone
Measurement items SPL, Leq, SEL
Measurement range 30dB ~ 130dB (A), 35dB ~ 130dB (C), 40dB ~ 130dB (Z)
Dynamic Range 100 dB
Integrate Time Setup Randomly , 10s,1 m, 5m, 10m, 30m, 1h, 8h, 16h, 24h
Max. peak C sound level measurement 70~133 dB
Time weighting Fast, Slow, Impulse, Peak
Frequency weighting A/C/Z
Frequency Range 31.5HZ ~ 8KHZ
DC output 2Vdc/130dB
AC output 2Vrms/130dB
Battery Life 30 hours
Battery Four 1.5V LR-6/AA size alkaline cell
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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