In bulk for home and industrial in china sound level meter TL-200

Digital Sound Level Decibel Meter 30-130dB Pressure Tester USB Noise Measurement
INTERNAL MEMORY DATA LOGGER, AUTO RANGING &BACKLIGHT TL-200

Designed according to following standards: International Electrician Committee Standard: IEC 651 TYPE 2 & ANSI 1.4 TYPE 2. This Max Measure Sound Meter meets the measurement requirement of safety engineers, health, industrial environment, which include factory, sports stadium, airport, urban, city noises and audio system, etc..

Type C weighting for audio and general purpose applications in warehouses, manufacturing units, offices, schools, pubs, clubs etc
Type A weighting for music & human hearing responses

Features:
Sound level Range:30 to 130dB(Auto Ranging)
Frequency weighting: A/C
Fast/Slow time weighting selection
32000 Reading Internal Memory (Data record function)*
Max Hold function
High accuracy
Bar graph display
AC/DC function
White Backlight
Over / Under alert function*
Time display
Auto-off function setup
Low Battery Alert
Tripod Mount (Tripod not included)

Software, USB Lead, Case & Batteries included
CE Certified & RoHS Compliant

Specifications:
Calibration sound source: 94dB @ 1kHz
Measurement range: 30~130dBA
Accuracy: +1.5dB(reference sound pressure standard,94dB@1KHz)
Frequency response: 31.5~8.5KHz
Resolution: 0.1dB
Frequency weighting: A/C
Analogy bar graph: 2dB/1 Bar graph
Sampling rate: 2 times/second (FAST), 1 time/second (SLOW)
AC signal output: 4Vrms/ full barograph, output impedance is approx 600 ohm
DC signal output: 33mV/dB
Dynamic characteristic: FAST (high speed) / SLOW (low speed)
Data storage quantity: 32000 readings
Power supply: 6V (4pcs AA Size 1.5V battery)
Dimension:245*7*45mm
Weight:approx240g(battery included)

Product description:

1. Sponge ball (Mandatory for outdoor use to prevent wind noise disturbing the unit readings)
2. USB socket
3. Capacitance microphone
4. LCD display with backlight
5. Power on/off switch
6. A/C frequency weighting selection button
7. MAX reading button
8. FAST/SLOW button
9. Backlight button
10. REC button
11. Tripod mounting thread
12. Battery cover
13. AC output socket (for analog output)
14. DC output socket (for analog output)

• Set Includes:
• Meter
• USB Lead
• Software
• DC 6V Cable
• Soft Case
• Battery
• Manual