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kindly quote me the sound level meter as below needs
Operation 70dB
reading : 30-100, 50-120, 70-140
2 mode operation : SPL / Max
2 selection : A / C
2 respond : Fast / Slow
a button
Can be exchange with microphone .52"
AC /DC output jack
battery can last 25hours and above.
Rating:  [5 of 5 Stars!] |
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Calibrators (2) 
