The SEN21025 is a 1 m long probe rod for the EnviroSCAN. It is included with the EnviroSCAN 1 m probe and is normally purchased separately only when the original rod has been damaged and needs replacement. It consists of a plastic rail and a ribbon cable with connectors placed every 10 cm along the rail for connecting to SEN03010 water content sensors. The SEN21025 can accommodate 1 to 10 sensors. A 1.5 m access tube, the SEN21010, is required for housing the 1 m long probe rod. That access tube is also included with the EnviroSCAN 1 m probe and would be purchased separately only when the original has been damaged or cannot be retrieved.
Sentek has changed the name of their water-content profile probe from EnviroSMART to EnviroSCAN.