DW12 Series is a professional temperature sensor hydrological observation instrument which canmeasure the parameters of temperature and provide data support for environmental assessment. DW12 Series offers Direct-reading or Direct-reading Self-contained integrated modes for different types of integrated systems or profiling systems. It is capable of working reliably at a depth of 6000 meters. The DW12 standard packages include user-friendly software and cables, offering a simplified and efficient solution for research, monitoring and engineering applications.