LD 8506 Professional Sound Level Meter measures and displays sound levels in dB from 30 to 130 dB with high accuracy. User selectable features include Frequency weighting (A & C), Response Time (Fast & Slow), Data Hold and MAX/MIN recording. The outstanding function of AC/DC analog signal output and data logger make this instrument more powerful.  It's CE approved, and comply with norm of IEC 651 type 2, ANSI S1.4 TYPE 2.

 Features:    Digital LCD with Analog Bar-graph and backlight
                   A/C Frequency weighting
                   DC/AC Analog signal output
                   Fast/Slow Response time
                   Over-range and Under-range indication
                   MAX/MIN, Data Hold, Auto Power Off
                   Low power consumption
                   External 9V DC power supply
                   Data logging and USB interface

Specifications
Applicable standards：IEC61672-1: 2003 Class 2
Measurement range：30 to 130dB
Microphone：1/2 inch polarized condenser microphone
Frequency range：31.5~8000Hz
Accuracy：±1.5dB
Resolution：0.1dB
Data update：500ms
Response time：FAST 125 ms， SLOW 1 s
Standard calibrator：1KHz sine wave @ 94 ors 114dB
Display：3-1/2 digital LCD with analog bar-graph
Outputs：AC/DC signal output from earphone jack
  AC=1Vrms ，DC=10mV/dB
Output port: Micro USB
Power: One 9V battery or DC 9V
Data logger Memory: 32000 data
Operating condition: 0 ~ 50°C (32 ~ 122°F)，10 ~ 90% RH，Non-condensing
Storage condition: -20 ~ 60oC (- 4 ~ 140°F)，10 ~ 90% RH，Non-condensing
Weight & dimension: 200g，215mm*58mm*33mm
Accessories：Manual, 9V battery, windscreen, USB cable, Software CD, gifbox package.