YSI - a Xylem brand  

YSI EXO2s (Shorty) Customized Multiparameter Sonde

Go more places with YSI EXO2s (Shorty) sonde! The more maneuverable monitoring platform.

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

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

  • Features
  • Specifications
  • Training
  • Documents

It 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.

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
Size: 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
Warranty: 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