I have one sensor in the greenhouse, and a soil probe under the cold frame.
It's lovely to be able to check on temps from my phone.
The soil probe will text me if the temp gets over 80f, so I know to go outside to vent the frame.
Got myself an early Christmas gift, a weather station and external sensors
I love my weather station. Have the sensors in my greenhouse, chicken coop and the observatory so nice to be able to check temps from the house love the soil reader too.