SLM-441 Decibel Meter Datalogger Sound Level Tester Noise Decibel Reader Monitor SPL Meter with 43,000 Data Record, Visual Alarm, A/C Weighted, PC Connection Colored Screen Display for Home, Classroom, Traffic Noise Monitoring etc.

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Sound Level Meter is expertly crafted to meet the precise needs of noise engineers, quality control specialists, and health safety professionals. Whether you're measuring sound levels in a factory, office, traffic, or at home, this device delivers reliable and accurate results. It's the perfect tool for a wide range of noise measurement applications, ensuring you maintain a safe and compliant environment.


Features:

  • A/C frequency weighting selection
  • Fast/Slow time weighting selection
  • Three-color light alarm
  • MAX/MIN/HOLD Function
  • Data storage function - 43,000 data record
  • Data read and delete
  • Automatic shutdown can set and also shutdown when battery runs out
  • Data and time display (year-month-day-hour-minute-second)
  • Line chart with visual noise data changes
  • Alarm light function (High/Low alarm value)
    • Green: does not exceed yellow(low)alarm value
    • Yellow: exceed the yellow(low) alarm value
    • Red: exceed the red(high) alarm value
  • USB charging and PC communication compatible with the following OS: Microsoft Win 7, 10 and 11
    • for data record download
    • real-time data sampling analysis
    • printing graph and data function
  • DC output
  • Standard approval:
    • International Electrician Committee standard: IEC PUB 651 TYPE2
    • US national standard: ANSI S1.4 TYPE2
  • Tripod fixed screw aperture
  • Type-C interface


Specifications:

  • Calibration sound source: 94dB@1KHz
  • Measurement range: 30~130dB (A), 35~130dB (C)
  • Accuracy: ±1.5dB (Reference sound pressure standard, 94dB@1KHz)
  • Resolution: 0.1dB
  • Frequency Weighting: A/C
  • Frequency Response: 31.5~8500Hz
  • Time-weighting: FAST/SLOW
  • Sampling rate: FAST- 8 times/second ; SLOW - 1 times/second
  • Rated current: 70mA
  • Standby current: 5uA
  • Power supply: 3.7V lithium battery / 1000mAh
  • Charging time: 1.5h
  • Duration of service: 8h
  • Data storage: 43,000
  • Microphone: 1/2-inch polarization capacitance microphone
  • Operating Environment: 0~50°C; 10~80% RH
  • Dimension: 160 x 56 x 31mm (excluding sponge ball)
  • Weight: approx. 114gms (excluding sponge ball)DC output: Output the noise value by voltage mode according to proportion

    DC voltage range: 300mV~1300mV
  • DC voltage error: ±5mV
  • DC impedance: 120R
  • DC and noise relationship: Vout=dB x 10 unit: mV (dB: noise value, Vout: DC output voltage)


Set Includes:

  • 1 x Sound Level Meter
  • 1 x Windproof Sponge ball
  • 1 x USB Cable
  • English Instruction Manual
  • Standard factory packaging


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