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Handheld digital sound level meter with LCD screen, grey plastic body and 1/2 inch microphone capsule

Alion fortune HK Limited

Alion fortune HK Limited GM1357 engineering development tool 30-130 dBA 35-130 dBC

SKU CH-KT01-SS6KJ MPN GM1357

Measures sound pressure from 30 to 130 dBA and 35 to 130 dBC with ±1.5 dB accuracy, A/C weighting and fast/slow time response

  • TypeEngineering Development Tools
  • Measures 30 to 130 dBA and 35 to 130 dBC for wide noise coverage
  • Accuracy within ±1.5 dB with 0.1 dB resolution for reliable readings
  • A and C frequency weighting plus Fast and Slow time weighting for versatile analysis
  • AC/DC output enables data logging and external recording
  • Auto power off with cancel option and low battery indication extend field use

Sound Level Meter 30-130 dBA

The Alion fortune HK Limited GM1357 is a digital sound level meter designed for engineering development and noise assessment tasks. It measures A-weighted levels from 30 to 130 dBA and C-weighted levels from 35 to 130 dBC with a stated accuracy of +/- 1.5 dB. The instrument conforms to IEC 651 Type 2 and ANSI S1.4 Type 2 standards. A 1/2 inch polarization capacitance microphone captures sound across a 31.5 Hz to 8.5 kHz frequency range.

Technicians needing Class 2 compliance.

This meter suits professionals conducting environmental noise surveys, industrial hygiene checks, or product validation where Type 2 tolerance is accepted. The five selectable measuring ranges from 30-130 up to 80-130 allow flexible gain staging. It is not for buyers who need Class 1 precision or laboratory-grade traceability tighter than the specified +/- 1.5 dB. Users requiring real-time data logging or computer connectivity should look at instruments offering those interfaces.

Accuracy +/- 1.5 dB defines suitability

The single specification that decides fit is the +/- 1.5 dB accuracy claim under IEC 651 and ANSI S1.4 Type 2 standards. If your procedure mandates a tighter tolerance, this model will not meet the requirement. If Type 2 tolerance is acceptable, the 0.1 dB resolution, FAST and SLOW time weightings, and dual A/C frequency weighting support typical compliance measurements. Power comes from four AA batteries or a 6 V DC adapter, neither included.

Highlights

  • Measures 30 to 130 dBA and 35 to 130 dBC for wide noise coverage
  • Accuracy within ±1.5 dB with 0.1 dB resolution for reliable readings
  • A and C frequency weighting plus Fast and Slow time weighting for versatile analysis
  • AC/DC output enables data logging and external recording
  • Auto power off with cancel option and low battery indication extend field use

Specifications

TypeEngineering Development Tools

Questions about this item

How much power does the GM1357 draw when it runs continuously?

It operates on four 1.5 V AA batteries or a DC 6 V 100 mA adapter; batteries are not included.

What extra equipment is required before the GM1357 can take measurements?

You must supply four AA batteries or a 6 V DC adapter; no other accessories are needed.

Will the GM1357 work with older 1/2-inch polarised condenser microphones I already own?

The meter has a built-in 1/2 inch polarisation capacitance microphone and does not accept external microphone modules.

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