There are two sensors.. Both the same. One goes into your pool water piping not sure it matters where and measures your water temperature. Held in by a band clamp..
The other is the air temp and is just left sticking out the bottom of the enclosure.
No it's not a freeze plug. You drill a 3/8" hole into the plumbing after the filter and the probe is secured with a band clamp. That's really the only way it will work.
Hello , This thread has been inactive for over 60 days. New postings here are unlikely to be seen or responded to by other members. For better visibility, consider Starting A New Thread.
Welcome to TFP! For a wealth of pool care information please check out our free Pool School. If you are in need of specific help then we encourage you to Register and ask us here in the forum!