SLM-30B Professional Sound Level Meter with Smart Bluetooth Function 20000 Datalogging Max/MIN/Hold Alarm

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Introducing our Bluetooth Sound Level Meter - the perfect tool for accurately measuring and controlling sound levels in any environment. Equipped with Bluetooth technology, this meter can effortlessly connect to your smartphone via the dB Tester APP. Stay connected and conveniently monitor sound levels remotely. Provides accurate readings in a wide range from 30 to 130 dBA with an impressive ±1.5dB Accuracy and 0.1dB Resolution, you can trust the results.

Suitable for a wide range of applications. Whether you need to monitor sound quality in factories, offices, homes, cars, schools, or construction sites, this tool is perfect for Sound Quality Control, noise engineering, health prevention, and various environmental noise assessments.

Don't miss out on this powerful sound-level meter that combines accuracy, convenience, and portability. Upgrade your sound monitoring capabilities today!


  • Bluetooth and data recording function up to 20,000 data
  • MAX / MIN / Lock measurement with Data HOLD
  • Clear and large LCD with backlight
  • Maximum, minimum, and current reading with hold function
  • Low Battery Alert
  • Compact and lightweight design fits comfortably in your hands
  • Screen displays an over-range alert when a measurement exceeds the specified normal range
  • Manual or auto power off
  • Factory Calibrated
  • Easy Calibration (recommended calibration interval is one year)


  • Material: Plastic
  • Measuring range: 30~130dBA
  • Accuracy: ±1.5dB
  • Frequency range: 31.5Hz~8KHz
  • Frequency weighting features: A-weighting
  • Resolution: 0.1dB
  • Working Temperature and Humidity: 0-40°C, 10-80%RH
  • Storage Temperature and Humidity: -10-60°C, 0-90%RH
  • Power supply: 3 x 1.5V AAA Batteries
  • Weight: approx. 96.4 gms
  • Dimension: approx. 56 x 177 x 36mm

Set Includes:

  • 1 x Sound Level Meter
  • 1 x Wind-resistant ball
  • 1 x English User Manual
  • 3 x AAA Battery

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