Noise Hound Lite

Noise Hound Lite provides continuous noise metrics and audio exceedance recording for compliance, 365 days a year.

It is a waterproof (IP67), Class 1 sound monitor that live-streams noise metrics. With Benchmark's environmental management software and reporting, it informs operations management and monitors compliance with regulatory requirements.

Built for continuous compliance

• Low power: 5 W in normal operation, under 1 W in sleep mode
• Small operational footprint, with battery and solar power
• Operating temperature up to 60°C
• IEC 61672-1 Class 1 accuracy, and IEC 61672-3 calibration with a 94 dB or 114 dB calibrator
• Parameters: SPL, Leq, Ln statistics (L1–L99), Lmax, Lmin and Lpeak
• A, C and Z frequency weighting, with fast and slow time response
• 1/1 or 1/3-octave bands, 6.3 Hz to 20 kHz
• Ethernet, Wi-Fi, LAN, 4G, 5G and Low Earth Orbit satellite
• OLED display for on-site checks, and a relay output for an external sensor
• Optional weather station: temperature, humidity, wind speed and direction, air pressure and precipitation

Software, triggers and reporting

• Prediction of end-of-period statistical values
• Lday, Levening, Lnight and Lden emailed at the end of each period
• Wall-mount and impulse noise corrections for statistical metrics
• Triggers on LAeq, LCeq, LZeq, LAFmax, LApeak and LCpeak
• Remote control by API, including an offline mode
• Site-specific daily summary report (PDF)
• Archive of audio, statistical and noise values
• Live one-second data streaming via Modbus
• Selected data can be shared with external users, with an optional link expiry