Spartan™ Sound Level Meter

Solutions for Occupational Noise Assessment | Series 821

Concerned about potentially dangerous levels of noise in the workplace? Spartan Sound Level Meters Series 821IH from Larson Davis, designed for Occupational Health and Safety professionals, offers all the tools needed for workplace noise and noise exposure measurements, including built-in workplace noise dose metrics and selectable time and frequency weightings. Optional Octave Band Analysis feature (1/1 and 1/3 octave bands) provides data that can help with noise source identification and hearing protection selection. Included software provides noise reports over time, data visualization, and streamlined results reporting, plus the ability to export data to a variety of formats.

Spartan Sound Level Meter is available as a Class 1 (Model 821IH) or Class 2 (Model 721IH) device. See Configurations or download the datasheet for more details.


  • Easy-to-navigate, responsive touch display
  • Long battery life
  • Wireless charging
  • Automatic data transfer
  • Built-in noise dose metrics
  • Languages supported: English, Français, Italiano, Português, Español


  • Walkaround Industrial Noise Measurements
  • Job-based Noise Measurements
  • Site Surveys
  • Plant Sound Maps
  • Noise Dose Measurements

Key Specifications for Spartan Model 821IH

Dynamic Range (A-weighted typical)17 to 140 dB
Time WeightingsFast, Slow, & Impulse
Frequency WeightingsA, C, & Z
Data Storage (micro SD card)8 GB standard
Up to 256 GB
Data LoggingTime history: 1 s to 1 h
Measurement History: 1 min to 6 h
MetricsLeq, Lmax, Lmin, Lpeak, Ln (6 values)

Available Configurations

Spartan Sound Level Meter is available as a Class 1 or Class 2 device and with or without Octave Band Analysis.

Time History Logging
Measurement History
OBA (1/1 and 1/3 Bands)  



Microphone377B02 (821 Models)
375A04 (721 Models)
PreamplifierPRM821 (821 Models)
PRM721 (721 Models)
SoftwareG4 LD Utility
Charging CableUSB-C (CBL242-03)

Standards and Approvals for Series 821IH

AcousticANSI S1.4-2014 Class 1
IEC 61672-1:2013 Class 1
Noise DosimetryANSI S1.25-1991
IEC 61252:2017
SafetyDirective 2014/35/EU
IEC 61010-1:2010
RoHS Directive 2011/65/EU
ApprovalsCE, RoHS, WEEE


Technical Support

  • 24 Hour Hotline 716-926-8243
  • Toll-Free (US & Canada Only) 888-258-3222

Product Warranty Information

Resources & Education

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Preliminary - specifications subject to change