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The reason I was asking was I can get the old controller (Non Wireless) for free... and I want something to mess around with for my Profilux to control.

If I wanted to use an Op-Amp to reduce it to 0-3.5 volts do I just bend up the middle pin on the pot and use that? I would be using the original non wireless controller. Is that all I would have to...

Or you could keep the P2 as a... Backup?!?!?!

Than can I add the suggestion of a 1 point calibration?

Oh Wow... I feel like an idiot now.
I read the back of the microcontroller and plugged that into the fujitsu flasher.. Works great now.

OK so in the Fujitsu program I select Com 04 where my USB to serial shows up. Every button but full operation and download are unselectable.
If I do Full Operation it says S Format Decoder. ...

I stated in one thread that I calibrated the PH probe and than decided to go do the software update realizing that it was 3.08.

But thanks for the info.

Why does the second point of the PH calibration only go up to 9.5? Maybe it does go up to 10 now but I cant get the firmware to update from 3.08 or w/e... And an option for single point calibration?

I am using the RS232 onnection through a usb serial adapter.
There is no problem with that and it worked fine just before the software crashed. What I need to know is why my controller will not go...

and I did try the fujiotsu flasher thing right to the specs in the manual

The profilux control II software crashed during the software update. AAll I get on the screen is all the pixels on the top row being lit. It will not go into download mode.

On the Profiilux 3 upgrade would it be at all possible to add the feature of using the ORP/Readox port for a second PH probe? I would like to be able to monitor my tanks PH as well as use it to...