Hot-selling products

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YEX-HY-LLT-01 Inputting Type Liquid Level Transmitter

YEX-HY-LLT-01 Inputting Type Liquid Level Transmitter from YexSensor supports stable hydrology monitoring with RS485 Mod···

YEX-HY-RWLS-01 Radar Water Level Sensor

YEX-HY-RWLS-01 Radar Water Level Sensor from YexSensor supports stable hydrology monitoring with RS485 Modbus RTU, relia···

YEX-S1-EC Conductivity Sensor for RS485 PLC

Online EC conductivity sensor for industrial water, aquaculture and wastewater. RS485 Modbus output for PLC/SCADA and sa···

YEX-S1-COD Online COD Sensor -RS-485 (Modbus RTU protocol) / 4-20mA  Yexsensor

Many organic compounds dissolved in water are absorbent to ultraviolet light. Therefore, the amount of dissolved organic···

YEX-S2-NHN-A Online Ammonium Nitrogen Sensor RS-485 (Modbus RTU)/4-20 mA

Yexsensor YEX-S2-NHN-A online ammonium nitrogen sensor adopts patented PVC membrane ion selective electrode (ISE) techno···

YEX-S1-ZS Online Turbidity Sensor RS485 for Wastewater and Drinking Water

YEX-S1-ZS online turbidity sensor supports RS485 Modbus output for wastewater treatment, drinking water monitoring, surf···

YEX-S1-RDO Optical Dissolved Oxygen Sensor RS485 for Aquaculture

YEX-S1-RDO optical dissolved oxygen sensor uses fluorescence measurement with RS485 Modbus output for aquaculture, waste···

YEX-S1-PH Online pH Sensor RS485 Modbus for Wastewater Monitoring

YEX-S1-PH is an industrial online pH sensor with RS485 Modbus RTU output for wastewater, aquaculture, industrial process···

YEX-S1-ORP Online ORP Sensor RS485 Modbus for Water Treatment

YEX-S1-ORP online ORP sensor provides stable oxidation reduction potential measurement with RS485 Modbus RTU output for ···

YEX-S1-NHN Online Ammonium Nitrogen Sensor — High-Precision Industrial RS-485 Modbus RTU

Explore the Yexsensor YEX-S1-NHN online ammonium nitrogen sensor, which adopts advanced ion selective electrode (ISE) te···

YEX-S1-EC Online Conductivity Sensor — High-Precision RS-485 Modbus RTU Water Quality Monitoring

The YEXsensor YEX-S1-EC online conductivity sensor is a professional online monitoring device specially designed by Yexs···

YEX-S1-CL Online Residual Chlorine Sensor RS485 for Drinking Water

YEX-S1-CL online residual chlorine sensor supports RS485 Modbus output for drinking water, swimming pools, cooling water···

Water Quality Sensor

YEX-S1-EC Conductivity Sensor for RS485 PLC

Online EC conductivity sensor for industrial water, aquaculture and wastewater. RS485 Modbus output for PLC/SCADA and sa···

YEX-S1-COD Online COD Sensor -RS-485 (Modbus RTU protocol) / 4-20mA  Yexsensor

Many organic compounds dissolved in water are absorbent to ultraviolet light. Therefore, the amount of dissolved organic···

YEX-S2-NHN-A Online Ammonium Nitrogen Sensor RS-485 (Modbus RTU)/4-20 mA

Yexsensor YEX-S2-NHN-A online ammonium nitrogen sensor adopts patented PVC membrane ion selective electrode (ISE) techno···

YEX-S1-ZS Online Turbidity Sensor RS485 for Wastewater and Drinking Water

YEX-S1-ZS online turbidity sensor supports RS485 Modbus output for wastewater treatment, drinking water monitoring, surf···

YEX-S1-RDO Optical Dissolved Oxygen Sensor RS485 for Aquaculture

YEX-S1-RDO optical dissolved oxygen sensor uses fluorescence measurement with RS485 Modbus output for aquaculture, waste···

YEX-S1-PH Online pH Sensor RS485 Modbus for Wastewater Monitoring

YEX-S1-PH is an industrial online pH sensor with RS485 Modbus RTU output for wastewater, aquaculture, industrial process···

YEX-S1-ORP Online ORP Sensor RS485 Modbus for Water Treatment

YEX-S1-ORP online ORP sensor provides stable oxidation reduction potential measurement with RS485 Modbus RTU output for ···

YEX-S1-NHN Online Ammonium Nitrogen Sensor — High-Precision Industrial RS-485 Modbus RTU

Explore the Yexsensor YEX-S1-NHN online ammonium nitrogen sensor, which adopts advanced ion selective electrode (ISE) te···

YEX-S1-EC Online Conductivity Sensor — High-Precision RS-485 Modbus RTU Water Quality Monitoring

The YEXsensor YEX-S1-EC online conductivity sensor is a professional online monitoring device specially designed by Yexs···

YEX-S1-CL Online Residual Chlorine Sensor RS485 for Drinking Water

YEX-S1-CL online residual chlorine sensor supports RS485 Modbus output for drinking water, swimming pools, cooling water···

YEX-S2-KA-A Industrial Grade Potassium Ion Sensor | Online K+ Monitoring | PVC Membrane ISE | RS485 Modbus | Potassium Probe

YEXSensor YEX-S2-KA-A online potassium ion sensor adopts patented PVC membrane potassium ion selective electrode, range ···

YEX-S2-MLSS-A Online Sludge Concentration Sensor for Aeration Tank, Secondary Sedimentation Tank and Return Sludge

Yexsensor YEX-S2-MLSS-A Online Sludge Concentration Sensor adopts backscattered light principle, range 0~20.000g/L, reso···

Level Sensors & Meters

YEX-HY-LLT-01 Inputting Type Liquid Level Transmitter

YEX-HY-LLT-01 Inputting Type Liquid Level Transmitter from YexSensor supports stable hydrology monitoring with RS485 Mod···

YEX-HY-RWLS-01 Radar Water Level Sensor

YEX-HY-RWLS-01 Radar Water Level Sensor from YexSensor supports stable hydrology monitoring with RS485 Modbus RTU, relia···

YEX-HY-DFM-01 Doppler Flow Meter

YEX-HY-DFM-01 Doppler Flow Meter from YexSensor supports stable hydrology monitoring with RS485 Modbus RTU, reliable fie···

YEX-HY-DFM-02 Doppler Flow Meter

YEX-HY-DFM-02 Doppler Flow Meter from YexSensor supports stable hydrology monitoring with RS485 Modbus RTU, reliable fie···

YEX-HY-RFMS-01 Radar Flow Meter Sensor

YEX-HY-RFMS-01 Radar Flow Meter Sensor from YexSensor supports stable hydrology monitoring with RS485 Modbus RTU, reliab···

ABOUT US

Leading industrial solutionprovider since 2020
Yexsensor Company ProfileYexsensor is a leading high-tech enterprise specializing in the design, manufacturing, and export of industrial and environmental sensors. With a robust research and development (R&D) team, years of experience in global trade, and a focus on delivering precise and reliable sensing solutions, Yexsensor has established itself as a key player in the sensor technology industry. The company is committed to providing high-quality, cost-effective solutions tailored to a wid...
Changsha Yex Technology factory gate

Global Market Reach

To date, YexSensor products have been exported to 29+ countries and regional markets, covering Asia, Europe, North America, South America, Africa and Oceania.

North America Latin America Europe Middle East Africa Asia Oceania
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    Factory land occupation

    Factory land occupation
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    Senior technical engineer

    Senior technical engineer
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    Utility model patent

    Utility model patent
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    Global customers

    Global customers

CASE

Official certification, professional after sales service.
Singapore Tuas Port Nearshore Seawater Monitoring Case: A Water Quality Sensor on a Survey Boat
Secondary Water Supply Online Water Quality Monitoring Case: Real-Time Pump Room Outlet Supervision
Multi-Parameter Water Quality Sensor Probe Package Prepared for OEM Project Delivery
Case Study: Water Quality Sensor Procurement Handover for OEM Project Delivery
Yellow River High-Turbidity Water Monitoring Case: Sensor Configuration for Sediment-Rich Surface Water
Vietnam Mekong Delta River Water Quality Monitoring Reference Case: Online Sensors for Turbidity, COD and Conductivity
Wuhan Yangsigang Yangtze River Bridge Water Quality Monitoring Case: Online Monitoring for a Bridge Area
Submersible Level Transmitters Shipped to Spain for Multi-Point Water Level Monitoring
Shanghai Dazhi River Water Quality Monitoring Case: COD and Ammonium Nitrogen Monitoring for a Wide Artificial River
Philippines Laguna de Bay Algae Monitoring Reference Case: Chlorophyll and Blue-Green Algae Sensors for Lake Water Quality
Rizhao Reservoir Buoy Monitoring Case: Unattended Online Monitoring for an Offshore Drinking Water Source Point
Nanjing Riverside Park Water Quality Monitoring Case: Preventing Algae Risk in Landscape Wetland Water

Blog

Access to global foreword information
Groundwater Dynamic Monitoring: Four Core Water Quality Signals for Long-Term Stations
2026-07-16
Groundwater guide for dynamic monitoring using four core water quality signals a···—
RS485 Water Quality Sensor Wiring: What PLC Integrators Should Confirm Before Startup
2026-07-16
Procurement and startup guide for RS485 water quality sensor wiring, Modbus sett···—
Sludge Dewatering Feed Monitoring: MLSS and Conductivity Clues Before Polymer Adjustment
2026-07-16
Maintenance guide for sludge dewatering feed monitoring with MLSS and conductivi···—
Final Effluent Chlorine and Turbidity Monitoring: Avoiding False Confidence at Discharge
2026-07-16
Disinfection guide for final effluent chlorine and turbidity monitoring before d···—