The HERTZINNO Online Acoustic Box Series is a smart acoustic edge computing terminal designed specifically for the Industrial Internet of Things (IIoT). It serves as a bridge between physical world sound signals and digital decision-making systems. This series of devices operates independently of the cloud, performing high-precision acoustic signal acquisition, feature extraction, and AI inference directly at the edge.From versatile 2-channel/8-channel analyzers for critical equipment monitoring to the Audio Quality Inspection Box tailored for automated production line testing, we deliver 24/7 online “auscultation” services for industrial scenarios of all scales.