Seeking Assistance: A Client's Journey to Find the Right Microdos Control Unit Probe

Client:
Hello, I have a microdos control unit.
Which model? Model mp2-ht.
Do you have this probe?

Don't you know the control unit or do you not have this probe?
Do you know where I could find it?
Your probe looks different.

This is my control unit.
Do you have the free chlorine (CL) sensor which is different from the redox sensor? Yes.
Could you direct me to where I can find this probe?
Okay, thank you.

Technical Advisor:
Hello.
Which model?
No, sorry!
I don't have the probe.
Your probe looks different.
Do you have the free chlorine (CL) sensor which is different from the redox sensor?
Sorry, I don't know.
Have a nice day.