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Microphone
Microphone type: CRY331
Open circuit Sensitivity: 40mV/Pa(-28dB re 1 V/Pa)±2dB
Frequency range: 20Hz~12.5kHz(±2dB)
Self-generated noise level: ≤18dBA
Technical Specification
Linear Operating Range: 25dBA ~ 135 dBA
Frequency range: 20Hz~12.5kHz(±2dB)
Internal noise: ≤20dBA
Applicable standards: IEC61672-1: 2013 Class 2
Weighting filters: Frequency weighting: A, C, Z
Time constants: Time Weighting: S, F, I
Measuring Parameter: Lp, Leq,t, Lpeak, Leq,T, Lmax, Lmin, SEL, Lex8h, LAVG, TWA, DOSE, Ln(n=5, 10, 50, 90, 95), SD, E
Measurement function: Integral Measurement, Statistical Analysis, 1/1 Oct, Sound Exposure Measurement, Monitoring
Statistics: L5, L10, L50, L90, L95
Communication Interfaces: AC/DC, PWM, USB, RS232, BT, WiFi
Memory: TF card 32 GB (removable & upgradeable up to 64 GB)
Calibration
Reference Level: 94dB@1kHz/114dB@1kHz
Calibration: Sound Calibrator Class 2 or Class 1
Environment: Temperature 23°C，Pressure 101.325kPa，Humility 50% RH
Power Supply
Battery: 4*AA battery
External Power Supply: 5V USB Type C or DC
Ambient conditions for operation
Operating temperature range: -20~+60℃
Humidity range: ≤90% RH
Physical Weight: 330g (With battery)
Size: L*W*H=249x76x30.5mm
Display: 320*240, TFT Display
Operation: Button
