Wireless environment sensors
For the measurement of temperature, humidity, rain, wind and air pressure I decided for wireless environment sensors of EVL. They work in the 868Mhz band and can be easily read using a receiver. The data are available in openHAB. There, the data are processed further by rules and influences both the ventilation and the heating control.
In addition, they are extremely energy efficient. Currently (2018) my outdoor weather sensor runs on a battery in the third year.
At the time of my planning, a binding for openHAB was developed.
The following components were used..
Temperature and humidity (ground floor, first floor, attic and in the shed)
Temperature, humidity, wind and rain (garden)
Additionally, To measure the air pressure i use a self-development sensor on the basis of a Jeenodes. This is a low power Arduino clone which already has a 868MHz radio module and could be easily integrated into the existing infrastructure.