The CV-374AV/BV integrated speedometer is an integrated speedometer launched by TOKYO SOKUSHIN CO., LTD in Japan. It has a built-in servo type speedometer that can observe general earthquakes to small and medium-sized earthquakes. It also has a large capacity CF card that can continuously record waveforms. The device supports network transmission, which can transmit seismic data and equipment status information for remote microseismic earthquake observation and building health monitoring. 

CV-374AV/BV includes two models: CV-374AV and CV-374BV. CV-374AV is suitable for single observation, while CV-374BV is suitable for multiple joint measurements.