New Style Hot Spring and Tiger River IQ2020 Temp (Control) sensor.
These sensors are commonly used in controllers from 2002 to current.
Sensor has a cable length of 970mm, Probe length of 25mm and a thread width of 16mm (Larger then the Hi Limit sensor).
This sensor is new style replacement for the HS-39530. Probe was extended, allowing it to sit deeper in the water for better temperature readings.
It is recommended to also replace the Hi-Limit sensor at the same time if replacing the temp sensor.