Open the Easytouch box, and look at the inside of the door, upper left. There is bar code with a six digit number beside it. Mine is a 521241. That is a ET4PS -- Pool/Spa.
Great choice on the test kit. Add that to your signature.
Thanks for the link. Looks like I have some reading to do. I just pulled out the installation ticket. We had it installed along with the Intelliflo and actuators in April 2020. On the ticket it's listed as "522355 - Easytouch Lite PSL4 Sys W/Screen Logic" It appears the J23 jumper has been cut out of mine. They didn't connect my old pool lights to the new controller. I eventually like to have LED replacements installed.
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