EXO2s Customized Multiparameter Sonde

EXO Multiparameter Sondes

EXO advanced water quality monitoring platform for continuous field water quality measurements in challenging conditions.

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7-Port, Customized, batteryless Water Quality Sonde

This is the EXO2s conversion service only.
EXO2 sonde, cables, probes/sensors, and accessories sold separately.

  • Overview

    Go more places with the EXO2s sonde!

    The more maneuverable monitoring platform.

    We have heard from customers who need the payload and capabilities of YSI’s best-in-class EXO2 sonde, but in spaces and places that can’t accommodate the EXO2. EXO2s is a customized, batteryless sonde that comes with the same warranty and capabilities as the EXO2, and is ideal for specialized applications such as:

    • Attachment to an AUV or aerial drone
    • Integration with a buoy
    • Horizontal profiling where light weight is optimal

    Key Benefits
    • High-accuracy sensors with on-board memory
    • Wireless communications
    • Seamless integration into marine, estuarine, freshwater and ground water monitoring systems

    Smart Sondes and Sensors
    Extremely versatile instrument, allowing the user to automatically configure a sonde with different sensor for different applications in minutes

    Tested in a variety of rigorous field conditions as well as lab conditions to ensure accuracy and response times

    Monitor without Interruption
    No matter which EXO sensors users select, other features of the sensors' design make them rugged and durable:

    • Wet-mateable connectors resist corrosion
    • Isolated components prevent short circuits
    • Welded housings and double o-rings prevent leaks
    • High-impact plastic and titanium resists breaking
    • Built-in antifouling systems protect data integrity
    • Low power consumption extends underwater deployments

    Discover how less size can bring more value
    to your science with the following benefits:

    Maintenance Special
    Take off the strain, with a
    30% reduction in weight.

     YSI Integrated Systems
    Go new places, with a
    33% reduction in length.​

    YSI Integrated Systems
    Explore your environment,
    with AUV's or drones.

    EXO University
    Expand your integrated system,
    and maximize your limited space.

    EXO University
    Lose the Alkalines,
    and save on maintenance.


    EXO-Factory-Service-Icon.png Add an EXO Factory Service Plan to your next sonde purchase and have the peace of mind that your new instrument is covered. Use today’s budget to protect your investment for years to come!

    YSI Integrated Systems

    The EXO sondes are a key component of a complete, unattended long-term water quality monitoring system from our Integrated Systems & Services group.

    EXO University

    Learning a new water quality platform can be a challenging process. Accelerate through the learning curve with our on-demand training program. Join us at YSI University!

  • Specifications
    Connectivity / Communications Computer Interface: Bluetooth wireless technology, RS-485, USB. Output Options with Adapters: USB; RS-232 & SDI-12; Modbus
    Depth / Pressure Rating / Limit 0 to 250 m (0 to 820 ft)
    Memory 512 MB total memory; >1,000,000 logged readings
    Monitoring Yes
    Operating Temperature -5 to 50 °C (23 to 122 °F)
    Power No batteries. Must be powered by external source.
    Sampling Yes

    Diameter: 7.62 cm (3.00 in)
    Length: 47.00 cm (18.5 in)

    Smart Sensors / Ports 7 sensor ports (6 ports available when central wiper in use). Peripheral ports: 1 power communication port; 1 auxiliary expansion port
    Storage Temperature -20 to 80 °C (-4 to 176 °F). Exception: 0 to 60 °C (32 to 140 °F) for pH and pH/ORP sensors

    2 Years: Cables; sonde bulkheads; handheld; conductivity, temperature, depth, and optical sensors; electronics base for pH, pH/ORP, ammonium, chloride, and nitrate sensors; and accessories

    1 Year: Optical DO membranes and replaceable reagent modules for pH and pH/ORP

    3 Months: Replaceable reagent modules for ammonium, chloride, and nitrate

    Waterproof Yes
    Weight 1.60 kg (3.53 lbs) with a full payload of 5 probes, 1 wiper, and probe guard installed
  • Video

    EXO-University.com | On-demand Sonde Training

    Learning a new water quality platform can be a challenging process. Accelerate through the learning curve with EXO University!

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