Once configured this device is effective. He announced the rain fell and that provided. All this in the heart of the usual interface of the weather station. A little difficult to close the unit after inserting the batteries. Once we understand the "trick" all is well! It is then necessary to recognize the new module to the Netatmo base. It takes 2 minutes. And then we look at the results on its iPhone, iPad or tablet indescribable ... This summer we will have had the pleasure to monetize the device seen bad weather he did !!!!! For only Geek! ;-) Default: a little fragile. Place it in a corner away footballs or windy locations. There must obviously be in the clouds and not as garden plants or garden :-) But this is so logical ....