CEM DT-8851 Digital Sound Noise dB Meter Data Logger PC USB Interface

CEM DT-8851 Digital Sound Noise dB Meter Data Logger PC USB Interface
Notice:
  The standard package don't include batteries.Because,the international air shipping forbid to ship liquid,powder and batteries,we can not put them in the package box.Hope you can understand buy them in your local store or supermarket.
At the same time, please forgive us that we are unable to provide the English user manual. If you need it, please contact the customer service after purchase.
Thanks for your support!
Sound Level Meters
DT-8851/8852 Sound Level Meters are designed for noise project, quality control, illness prevention & cure and all kinds of environmental sounds measurements. It is applied to the sounds measurement at factory, school, office, traffic access and household etc.
Features
This unit confirms to the IEC61672-1 class 2 for Sound Level Meters
MAX & MIN measurements
Overrange display
Underrange display
A & C Weighting
FAST & SLOW response
Analog AC/DC outputs for connection to frequency analyzer or X-Y shaft recorder
Datalogger function (8852)
Adjustable Alarm-Levels (8852)
Memory for 32700 readings (8852)
Size(HxWxD): 278mm x 76mm x 50mm
Weight: 350g
Specifications
Standard applied IEC61672-1 Type 2, ANSI S1.4 Type2
Accuracy ±1.4dB
Frequency range 31.5HZ ~ 8KHZ
Dynamic range 50dB
Level ranges LO:30dB~80dB Med:50dB~100dB
Hi:80dB~130dB Auto:30dB~130dB
Time weighting FAST ( 125mS ), SLOW ( 1s )
Microphone 1/2 inch electret condenser microphone
Resolution 0.1dB
Display Update 2 times/sec
Analog output AC/DC outputs, AC=1Vrms, DC=10mV/dB