Sound Level Meter (SL4201)

Features:
* Designed according to International Electrician Committee Standard IEC 651 TYPE 2, ANSI S1.4 TYPE 2
* Wild Measurement Range: 30-130dB
* Windscreen/sponge ball to filter-out unwanted signals
* With Bar graph & Overload Indication (Over/Under)
* With 2 equivalent weighted sound pressure levels A and C
A frequency weighting for general sound level measurements
C frequency weighting for checking the low-frequency content of sounds
* AC & DC analogy signal output are available connecting to frequency analyzer level recorder, FFT analyzer and graphic record
* Large LCD screen with digits reading
* Fast and Slow dynamic characteristic mode
* Maximum value hold function to lock up the maximum reading
* Dynamic sound level ranges & battery life indication
* Data storage
* With interface

Specification:

* Frequency range: 31.5Hz to 8KHz
* Measuring range: (28)30-130dB
* Frequency Weighting: A/C
* Microphone: 1/2 inch polarization capacitance microphone
* Digital Display: 4 digit LCD
* Resolution: 0.1dB
* Display Update: 2 times/sec
* Time Weighting: FAST 125ms
SLOW 1 second
* Measuring ranges:
Range 1: (28)30dB to 70 dB
Range 2: 60dB to 100 dB
Range 3: 90dB to 130 dB
* Accuracy: ± 1.5dB(reference conditions 94dB@1kHz)
* Dynamic range: 40dB
* MAX hold: "MAX"
* Data storage: 60000 samples
* Interface: USB interface
* Power: One 9V battery
* Operating environment: Temperature: 0-40º C(32-104° F)
Relative humidity: ≤ 75%RH