T Tocas(tm) Professional Digital Audio Sound Pressure Level Meter 30 ~ 130 Db Decibel Noise Measurement Detectors Logger Tester Home Office Indoor / Outdoor , NOT Suppot for Sd Card

Notice:
If your windows is vista and later versions (7 and 8), please mail us, we will send the User Manual which will guide you how to install the Digital Signature Verification in your Windows!!!

Features:

Plotted graph and recorded data are printable
High accuracy up to ±1.5 dB
With 2 equivalent weighted sound pressure levels A and C
FAST / SLOW time weighting selection
Automatic power off when idle for 10 minutes
Tested compatible with Microsoft Windows XP / Vista / 7 (32 bit and 64 bits)

Specifications:

LCD display: 4 digits
LCD size: 2.2 inch (55 mm)
Display: 0.5 secretary
Measuring Level: 30 ~ 130 dB(A) Accuracy: ±1.5 dB
Frequency Response: 31.5 Hz ~ 8.5 kHz
Resolution: 0.1 dB
Sound Level: Level 1: 30 ~ 80 dB
Level 2: 50 ~ 100 dB
Level 3: 60 ~ 110 dB
Level 4: 80 ~ 130 dB
Level 5: 30 ~ 130 dB
Dynamic Range: 50 dB / 100 dB
Frequency Weighting Characteristic: A / C
Analog Bar Graph: 1 dB / 1 bar graph
Sampling Rate: 20 times / second
PWM Signal Output: duty cycle = 0.01 x dB value x 100% / 3.3
Dynamic Characteristic (Time weighting): FAST(high speed) / SLOW(low speed)
Calendar Accuracy: ±30 seconds / day
Microphone: 0.5 inch polarization capacitance microphone
Power Supply: 4 x 1.5V AA battery (not include)or USB Cable
Power Life: about 20 hours continuous use (alkaline battery)
Operating Temperature: 0 ~ 40 °C (32 ~ 104 °F)
Operating Humidity: ‰¤80 % R.H.
Dimensions: approx. 256 (L) x 70 (W) x 35 (H) mm (10.1 x 2.8 x 1.4 inch)
Weight: approx. 308 g (without battery)

Package Include:

1 x Professional Sound Level Meter