Product Overview

The Lutron SL-4001 Digital Sound Level Meter is a professional-grade handheld instrument designed for precise measurement of environmental, industrial, and workplace noise levels. Built to comply with IEC 61672 Class 2standards, the SL-4001 provides highly accurate sound pressure level measurements across a wide range of 30 to 130 dB, making it suitable for acoustic analysis, industrial inspections, occupational safety, HVAC testing, environmental monitoring, and research applications.

The instrument features both A-weighting and C-weighting frequency networks, allowing users to measure environmental noise as perceived by the human ear or evaluate machinery and equipment noise using a near-flat frequency response. With selectable Fast and Slow response modes, users can capture rapidly changing sound levels or obtain stable average readings depending on the application. The built-in Max Hold function stores the highest measured value, while the AC/DC analog outputs enable connection to recorders, analyzers, and data acquisition systems for continuous monitoring.

Designed with a rugged ABS housing, large LCD display, and precision condenser microphone, the SL-4001 delivers reliable long-term performance in demanding industrial and laboratory environments. Its compact handheld design makes it easy to carry and operate with one hand, making it an excellent choice for engineers, safety professionals, maintenance personnel, and environmental consultants.

Key Features

✔ Measures sound levels from 30 to 130 dB

✔ IEC 61672 Class 2 compliant

✔ A & C Frequency Weighting

✔ Fast & Slow Time Weighting

✔ Large LCD display

✔ Max Hold function

✔ AC & DC Analog Output

✔ Precision ½-inch condenser microphone

✔ External calibration adjustment

✔ Low battery indication

✔ Over-range & under-range indication

✔ Three measurement ranges

✔ Lightweight handheld design

✔ Durable ABS housing

✔ Suitable for industrial, environmental, and laboratory applications

Product Highlights

• Professional digital sound level meter
• Wide 30–130 dB measuring range
• A & C weighting networks
• Fast and Slow response modes
• Max Hold function
• AC/DC analog output
• Precision condenser microphone
• IEC 61672 Class 2 compliance
• Portable handheld design
• Ideal for workplace noise monitoring

Technical Specifications

General Specifications

Measurement Specifications

Sound Level Measurement

Microphone Specifications

• Precision ½-inch Electric Condenser Microphone
• High Sensitivity
• Long-Term Stability
• Low Noise Design
• Professional Acoustic Measurement
• Suitable for Environmental and Industrial Noise Monitoring

Analog Output

Suitable for:

• Data Loggers
• Spectrum Analyzers
• Level Recorders
• Tape Recorders
• PLC Systems
• DAQ Systems

Display Functions

• Large LCD Display
• Maximum Value Hold
• Over Range Indication
• Under Range Indication
• Low Battery Indicator

Controls

• Power ON/OFF
• Range Selection
• A/C Weighting Selection
• Fast/Slow Response Selection
• Max Hold
• Calibration Adjustment

Measurement Standards

The SL-4001 complies with:

• IEC 61672 Class 2
• A & C Frequency Weighting Standards
• Fast & Slow Time Weighting
• Precision Condenser Microphone Technology

Applications

Industrial

• Factory Noise Monitoring
• Machinery Inspection
• Production Line Testing
• Preventive Maintenance
• Manufacturing Plants

Commercial

• Office Noise Assessment
• Shopping Malls
• Hotels
• Commercial Buildings
• Public Areas

Environmental

• Community Noise Surveys
• Environmental Monitoring
• Traffic Noise Measurement
• Construction Site Monitoring
• Urban Noise Assessment

Educational

• Schools
• Colleges
• Universities
• Research Laboratories
• Acoustic Studies

HVAC

• Fan Noise Testing
• Air Conditioning Systems
• Ventilation Equipment
• Compressor Inspection

Safety

• Workplace Noise Monitoring
• OSHA Compliance
• Occupational Health Surveys
• Hearing Protection Assessment

Industries Served

• Manufacturing
• Pharmaceutical
• Chemical
• Automotive
• Construction
• HVAC
• Environmental Consulting
• Government Agencies
• Educational Institutions
• Research Organizations
• Quality Control
• Facility Management

Package Contents

• 1 × Lutron SL-4001 Digital Sound Level Meter
• 1 × 9V Battery
• 1 × Calibration Screwdriver
• 1 × Instruction Manual

Advantages

• Professional IEC Class 2 accuracy
• Wide 30–130 dB measuring range
• A & C weighting capability
• Fast and Slow response modes
• AC/DC output for recording
• Max Hold function
• Durable industrial construction
• Lightweight and portable
• Reliable long-term performance
• Easy one-hand operation

Why Choose the Lutron SL-4001?

The Lutron SL-4001 is a versatile and reliable sound level meter designed for professionals who require accurate noise measurements across industrial, commercial, and environmental applications. With IEC 61672 Class 2 compliance, dual A/C frequency weighting, Fast and Slow response modes, Max Hold function, and AC/DC analog outputs, it offers comprehensive sound analysis capabilities in a compact and easy-to-use handheld instrument. Its durable construction, precision condenser microphone, and stable performance make it an excellent choice for engineers, safety officers, environmental consultants, and laboratory professionals.

Ideal For

• Safety Officers
• Industrial Engineers
• Environmental Consultants
• HVAC Technicians
• Acoustic Engineers
• Laboratory Professionals
• Quality Inspectors
• Factory Maintenance Teams
• Building Engineers
• Educational Institutions
• Government Agencies
• Research Laboratories