Any reason you even need them ? Because you *want* to is an acceptable answer. Believe me I get it if you like toys. But the heater and possible future SWG (hint hint) already have flow sensors that activate them and you don’t really need to know that value as long as they are working.want to put in a few fittings for flow and temp sensors that may be added later
Temperature sensors only tell a snapshot of that bit of water passing there and the pool will have several temps throughout. Plus they aren’t the most accurate anyway.
So most folks have no need for either sensor.