USER MANUAL
Digital Sound Level Meter
Model SL510
Additional User Manual Translations available at www.extech.com
SL510-en-GB_V1.0 8/17
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Introduction
Thank you for selecting the Extech Model SL510. The SL510 measures sound levels in decibels. This
device is shipped fully tested and calibrated and, with proper use, will provide years of reliable
service. Please visit our website (www.extech.com) to check for the latest version and translations
of this User Manual, Product Updates, Product Registration, and Customer Support.
Features
• Standard 0.5” microphone head
• A/C frequency weighting
• LCD with backlight
• Light weight, compact design
• Wristlet for convenient, one-handed operation
Safety
Please read the entire Quick Start and User Manual before operating this device. Use the meter
only as specified and do not attempt to service or open the meter housing. Do not allow children to
handle the meter or the windscreen. Please dispose of batteries and meter responsibly and in
accordance with all applicable laws and regulations.
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Meter Description
1. Microphone with windscreen
2. LCD Display
3. ON-OFF button
4. LCD Backlight button and ▲ button
5. A/C weighting selection button
6. Hold button
7. Max/Min Record button
8. SET, Peak capture and ▼ button
9. Fast/Slow response selection button
Measurement Considerations
1. Wind blowing across the microphone increases the noise measurement. Use the supplied
windscreen to cover the microphone when applicable.
2. Calibrate the instrument before each use if possible. Especially if the meter has not been
used for a long period of time.
3. Do not store or operate the instrument in areas of high temperature or humidity.
4. Keep meter and microphone dry.
5. Avoid severe vibration.
6. Remove the battery when the meter is to be stored for long periods of time.
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