European version. Allows connection of one sonde up to 250' away from 6500.
6503 breakout box, European approved (allows connection of one sonde up to 250' away from 6500)
Allows connection of two sondes up to 250' away from 6500
7-port Multiparameter Water Quality Sonde
Compact Sonde for Unattended Monitoring
For integrating a data logger and telemetry system with an EXO sonde.
4-port Multiparameter Water Quality Sonde