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POLWAX SL50 Sound Level Transmitter

Sound Level Transmitters · Atmos Series

SL50 Sound Level Transmitter

Model SL50

Noise level transmitter, 30–120 dB with ±1.5 dB accuracy, 4–20 mA, 0–10 V or RS485 Modbus RTU output, IP65.

Range
30 dB to 120 dB
Accuracy
±1.5 dB
Outputs
4–20 mA, 0–10 V, RS485
Protection
IP65
Request a Quote Request Datasheet

Overview

The POLWAX SL50 sound level transmitter monitors noise levels in real time in industrial, environmental and commercial settings. A precision electret condenser microphone covers 30–120 dB over 20 Hz–20 kHz, with 4–20 mA, 0–10 V or RS485 Modbus RTU output for integration with monitoring and control systems.

Key features

  • Measuring range 30–120 dB, resolution 0.1 dB
  • Precision electret condenser microphone
  • 4–20 mA, 0–10 V or RS485 Modbus RTU output
  • Wall or pole mounting
  • IP65 industrial ABS housing

Technical specifications

Measurement ranges & outputs

Measurement ranges and outputs
Measurement range30 dB to 120 dB
Accuracy±1.5 dB
Resolution0.1 dB
Response time≤30 seconds
Frequency range20 Hz – 20 kHz
Microphone typePrecision electret condenser microphone
Output options4-20 mA, 0-10 V, RS485 (Modbus RTU)

Power supply & connectivity

Power supply and connectivity
Communication protocolModbus RTU
Power supply12 V – 24 V DC

Installation & environment

  • Wall or pole mounting using standard brackets.
Installation and environment
Mounting optionsWall mount, pole mount
Housing materialIndustrial-grade ABS
Protection ratingIP65 (water-resistant and dustproof)
Operating temperature-10 °C to 60 °C
Storage temperature-20 °C to 80 °C
Humidity range0–95 % RH (non-condensing)

Order code

CodeOption
Output 000-10 V
Output 01RS485
Output 024 - 20 mA
Range 10130 - 120 dB

Example: SL50 -01-101

Specifications are subject to change. Please check the current datasheet or ask our team before ordering.

Applications & industries

  • Factories & worker safety
  • Airports
  • Traffic & smart-city noise monitoring
  • Hospitals
  • Educational institutions

Product enquiry

Request a quote for SL50 Sound Level Transmitter

Tell us about your application — what you need to measure, the range, number of points and where the instrument will be installed. Our team will reply with a recommendation and quotation.

  • Technical advice on model and options
  • Quotation for your quantity
  • Datasheets and documentation on request

Required fields

For example: measured parameter, range, number of points, output signal, installation location.

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Resolution
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Outputs
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Protection
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Interface
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Supply
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Protection
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