IoT product and technology solution provider

Smart Online Water Quality Sensor, LoRaWAN Sensor


Online Water quality sensors play an important role in detecting and evaluating the water quality and health status of drinking water, aquaculture, rivers, lakes, oceans, and industrial discharge water.ZONEWU's water quality sensors can mainly monitor water PH, EC, DO, Turbidity, Residual Chlorine, COD, Chlorophyll, Blue Green Alga, Ammonia Nitrogen, Suspended Solids, ORP, Ionic Class concentrations, etc., with High Stability, Measurement is quick, Strong adaptability. With the help of our water quality sensors and advanced technology, you can provide you with accurate and real-time data, so that you can take quick action to maintain or improve water quality.

  • Digital pH sensor
    RS485 Modbus pH Sensor IP68 Water Quality Probe
    Here’s a polished, professional, and SEO-friendly enriched version for your product description: This product is specially designed for environmental water quality monitoring, the detection of acid, alkali and salt solutions, real-time tracking of chemical reaction processes, and precise monitoring of **industrial production procedures. It delivers stable and reliable performance, enabling accurate online pH measurement to meet the demanding requirements of most industrial applications. With its high adaptability and durability, it effectively supports process control, quality assurance, and environmental compliance across a wide range of industrial scenarios.


    Model No.: LW102D-PH(RS485)

    Use: Water PH monitoring
    Measuring Range: 0~14.00PH

    Power Supply Mode: Battery or External DC

    Output Signal: RS485/4-20mA

    Certificates: CE,ROHS,FCC,ISO and 11 patents certifications
    Customized support: OEM, ODM
    Warranty: 1 Year
  • ZONEWU DO Sensor
    High Precision RS485 Output Water Quality DO Dissolved Oxygen Sensor
    The ZW-DO-PR is a high-precision dissolved oxygen (DO) sensor designed for industrial water quality monitoring. Utilizing the reliable fluorescence method, it delivers accurate measurements from 0 to 20.00 mg/L (0–200% saturation at 25°C) with ±2% accuracy and automatic temperature compensation (Pt1000). Featuring RS485 (Modbus RTU) output, this submersible sensor is built with durable POM, ABS, PC alloy, and 316L stainless steel, ensuring IP68 protection for reliable operation in harsh environments. With a response time of
    Model No.:ZW-DO-PR(RS485)
    Use: Monitor dissolved oxygen
    Power Supply Mode: DC12/24V
    Measuring Accuracy : ±2%, ±0.3℃
    Certificates: CE,ROHS,FCC,ISO and 11 patents certifications
    Customized support: OEM, ODM
    Warranty: 1 Year
  • EC water quality sensor
    Industrial EC Water Transmitter RS485 4–20mA Optional
    This product is suitable for drinking water, various water supply systems and recirculating aquaculture water. It adopts RS-485 (Modbus RTU protocol) signal output, which can be easily connected with PLC, DCS, industrial control computers, general controllers, paperless recorders, touch screens and other third-party equipment. It adopts 3/4 NPT thread design for submerged installation, which is convenient for installation in pipelines, water tanks and other occasions, with IP68 protection level, and can output conductivity and TDS at the same time.


    Model No.:LW100D-EC(RS485)

    Use: Measure EC of water

    Power Supply Mode: Battery or External DC

    Output Signal: RS485/4-20mA

    Certificates: CE,ROHS,FCC,ISO and 11 patents certifications
    Customized support: OEM, ODM
    Warranty: 1 Year
  • ZONEWU Total Hardness Sensor
    RS485/ 4-20 mA Total Hardness Sensor for Water Quality Monitoring
    ZW-TH-PR split-type online total hardness sensor uses patented PVC film Ca-Mg ion electrodes to measure water total hardness (as CaCO3) with 0~1000.0mg/L range and 0.1mg/L resolution, ±10% reading accuracy. Equipped with Pt1000 automatic temperature compensation, T90<60s, IP68 protection and 3/4NPT multi-installation mode. It supports RS485/ModbusRTU (optional 4-20mA) output, low power consumption, easy connection to PLC/DCS, and two-point calibration. The stable reference system extends electrode life, ideal for industrial water quality monitoring.
    Model No.:ZW-TH-PR(RS485)
    Use: Monitor Total hardness of water bodies
    Power Supply Mode: DC12/24V
    Measuring Accuracy : ± 10% of the reading; ±0.3℃
    Certificates: CE,ROHS,FCC,ISO and 11 patents certifications
    Customized support: OEM, ODM
    Warranty: 1 Year
  • ZONEWU Multi-Parameter Water Quality Sensor
    Professional Self-Cleaning RS485/Modbus Multi-Parameter Water Quality Sensor
    This professional self-cleaning RS485/Modbus multi-parameter water quality sensor features an integrated industrial-grade design. It supports simultaneous measurement of 8 water quality parameters (e.g., DO, COD, pH) with customizable configurations. Equipped with an automatic cleaning system, it effectively prevents microbial adhesion and cuts maintenance costs significantly. Adopting RS485 bus and Modbus/RTU protocol, it transmits data directly to collection platforms. With IP68 waterproof rating, POM+316L materials and easy submersible installation, it enables long-term accurate online monitoring for various water quality scenarios.
    Model No.:ZW-MPS(RS485)
    Use: Monitor Various Water Qualities
    Power Supply Mode: DC12V
    Certificates: CE,ROHS,FCC,ISO and 11 patents certifications
    Customized support: OEM, ODM
    Warranty: 1 Year
  • ZONEWU Water Quality Conductivity Sensor
    LoRaWAN IoT Water Quality Electrical Conductivity(EC) Sensor
    The LW100D LoRaWAN water quality electrical conductivity sensor supports LoRaWAN/TDMA networking and can accurately detect multiple parameters including EC, temperature, salinity and TDS. It features an automatic temperature compensation function with high measurement accuracy and strong anti-interference performance. Adopting a wireless remote transmission design, it is suitable for industrial working conditions, waterproof and pressure-resistant, and supports long-term outdoor online monitoring. Widely used in water quality testing, aquaculture, sewage treatment, environmental monitoring and other scenarios, it is easy to install, stable and durable.
    Model No.:LW100D-EC
    Use: Monitor Electrical Conductivity
    Power Supply Mode: DC12/24V
    LoRaWAN Mode: OTAA Class A/C
    Certificates: CE,ROHS,FCC,ISO and 11 patents certifications
    Customized support: OEM, ODM
    Warranty: 1 Year
  • LoRaWAN Calcium Ion (Ca²⁺) Water Quality Detector
    Industrial LoRaWAN Ca²⁺ Calcium Ion Water Quality Monitoring Detector
    LoRaWAN water quality calcium ion sensor is a wireless sensor for measuring the concentration of calcium ions in water, with automatic temperature compensation, less affected by the environment, and higher measurement accuracy. Connect with LoRaWAN collector through aviation connector to achieve wireless communication. Widely used for ion online automatic continuous analysis and detection in industrial wastewater, surface water, drinking water, seawater, and industrial production process control.


    Model No.:LW111D-CA

    Use: Monitor Calcium Ion content
    Power Supply Mode: DC12/24V
    LoRaWAN Mode: OTAA Class A/C
    Certificates: CE,ROHS,FCC,ISO and 11 patents certifications
    Customized support: OEM, ODM
    Warranty: 1 Year
  • Wireless Magnesium Ion Sensor
    LoRaWAN Water Enabled Industrial Magnesium Ion Monitoring Sensor
    LoRaWAN water quality magnesium ion sensor is an intelligent device that integrates low-power wide area communication and high-precision detection technology, designed specifically for monitoring magnesium ion concentration in water bodies. Equipped with professional ion selective electrodes, the measurement range is 0.01-1000mg/L, with an accuracy of ± 0.1mg/L, resistant to coexisting ion interference, and accurate and traceable data. Relying on LoRaWAN technology, the wireless transmission distance is 2-10km, and data can be collected remotely without wiring. Adopting IP68 fully sealed structure and corrosion-resistant materials, it can operate underwater for a long time and withstand complex environments such as industrial wastewater and seawater. Ultra low power design supports 3-5 years of maintenance free operation and is suitable for unmanned scenarios. Support access to mainstream IoT platforms for real-time monitoring and over limit alarms, widely used in fields such as seawater desalination, aquaculture, industrial water treatment, and environmental monitoring, providing efficient and stable magnesium ion monitoring solutions.


    Model No.:LW110D-Mg2+

    Use: Monitor Magnesium Ion content
    Power Supply Mode: DC12/24V
    LoRaWAN Mode: OTAA Class A/C
    Certificates: CE,ROHS,FCC,ISO and 11 patents certifications
    Customized support: OEM, ODM
    Warranty: 1 Year
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