Sounds like you encountered the same experience with the sl that i did. I jumped off the sl bandwagon because of its unreliability long ago and made that known in this forum several times. Live by cheap chinese manufacturing then you will die because of cheap chinese manufacturing.
The point to any et based smart controller is that it performs as close to ideal as possible. Being unable to put in all the parameters is a factor in the study. Those that allow more parameters and an onsite tipping rain gauge are going to perform better than those that don't.
We are in agreement that under watering is better than over watering and that is more likely to occur with an onsite weather station.
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