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This unit is in excellent condition and operates perfectly. I do not have the manual, I don't think (haven't looked yet.), but really these are so simple to operate that there is no need for it. It will come with the 9 volt battery in it and the windscreen.

These are usually around $120-140 on Ebay. I'm asking for $90 and shipping to the 48 continental US states will be included in that price.

Paypal would be the preferred payment method.

Thanks for looking. :T

Measuring instrument Water Tool

Today, there is a need to know just how loud your surroundings really are. The CHECK MATES are inexpensive tools everybody should own. The CM-140 and CM-150 meet the same IEC 651 Type 2 standards of SPL meters that cost 5 times as much or more. 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/MIN Function

•Level Range Display

•AC Signal Output

•Resolution 0.1 dB

•IEC 651 Type II, ANSI S1.4 Type II
Included Accessories:
Operation Manual
9V Battery


Microphone: ½" Electret condenser microphone
Accuracy: ±1.5 dB (ref 94dB @1KHz)
Level Range: Lo = 32 ~ 80 dB
Med = 50 ~ 100 dB
Hi = 80 ~ 130 dB
Auxiliary Outputs: AC Signal Output

Frequency Weighting: A , C
Time Weighting: Fast , Slow
Dynamic Range: 50 dB
Frequency Range: 31.5Hz to 8KHz
Battery Life:
9V Battery 70 hours (included)
Operation Temp.: 0°C~ 40°C(<80% R.H.)
Storage Temp.: -10°C~ 60°C(<70% R.H.)
9.1" ×2.1" ×1.3" (232mm×54mm×34mm)
Weight: Approx. 0.54lbs. (200g)


12 Posts
Re: Galaxy Audio "Checkmate" CM-140 SPL meter


I have a friend in Brazil interested! Would you ship it to Brazil by USPS?
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