Triplett SLM400-NIST 35-130 dB Type 2 Digital Sound Level Meter with NIST Certificate

Get accurate, on-the-spot sound level readings to support compliance, safety and operational decisions. The Triplett SLM400-NIST sound level meter is a handheld Type 2 meter designed for professionals who need dependable noise data for environmental monitoring, workplace safety and surveillance applications. With a wide 35–130 dB measurement range and NIST-traceable calibration certificate, the SLM400-NIST delivers trustworthy results for audits, noise surveys and equipment diagnostics.

Designed for field use, this digital meter features A/C weighting options, selectable Fast/Slow response, a clear backlit display and data-hold/Min-Max functions that simplify measurements in challenging environments. The compact form factor and intuitive controls let technicians, facility managers and security teams capture consistent readings during HVAC tuning, perimeter noise checks, and operational monitoring. Built to support compliance and practical decision-making, the Triplett SLM400-NIST helps you produce repeatable, defensible results. Order the meter to improve your noise monitoring, surveillance assessments, and regulatory reporting workflows.

• Provides fast, reliable noise assessments for safety and compliance, helping you document sound levels quickly onsite
• NIST-traceable calibration ensures measurement confidence for regulatory audits and quality assurance
• Wide 35–130 dB range and Type 2 accuracy cover industrial, commercial, and environmental monitoring needs
• Intuitive handheld design with backlit display, data hold and Min/Max functions for easy field use
• Ideal for security, surveillance and facility managers performing ambient noise surveys and HVAC diagnostics