Today, there is a need to know just how loud your surroundings really are. The CHECK MATES are inexpensive tools everybody should own. Windscreen and battery are included with each of the CHECK MATE models. 

The CHECK MATE series SPL (Sound Pressure Level) meters, first introduced in early 2003, allow musicians, sound contractors, and others to measure SPL in decibels (dB). A decibel is defined as the unit for measuring relative loudness of a sound. We have expanded our line from one CHECK MATE SPL Meter to four products in the category. We have sold thousands of units to working musicians, DJs, police departments, sound contractors, racetracks, etc...

  • Mini Size 
  • Low Cost High Performance 
  • MAX Function 
  • Level Range Display 
  • Resolution 0.5dB


1/2" Electret Condenser

Accuracy (under reference conditions 94dB @1kHz)


Level Range:

1: 40 - 70dB

2: 60 - 90dB

3: 80 - 110dB

4: 100 - 130dB

Frequency Range

125Hz to 8kHz

Frequency Weighting


Time Weighting

Fast, Slow

Dynamic Range



Liquid Crystal Display

Digital Display

Digits: 4

Resolution: 0.5dB

Update: 0.5 sec.

Alarm Function

Over, Under

Power Supplied By

One 9V battery (included), 006P or IEC 6F22 or NEDA 1604

Battery Life

Approximately 110 Hours (Alkaline)

Operation Temp.

0°C to 40°C (32°F to 104°F) (<80% R.H.)

Storage Temp.

-10°C to 60°C (14°F to 140°F) (<70% R.H.)


9.1" x 2.1" x 1.3" (232 x 54 x 34 mm) (HxWxD)

Weight (with batteries)

6 oz (170 g)

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ConditionBrand New (New)
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  • CM-130 Check Mate Battery-Powered SPL Meter

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