Your station is not receiving an outdoor temperature despite changing the battery according to the instructions and/or resetting? Then your outdoor transmitter may be faulty. But no problem, you can now replace the transmitter without necessarily having to invest in a station. Please note the compatibility of the sensor with the stations. A proper smart home includes measuring the temperature and humidity in every room. However, this can quickly cause hardware costs to skyrocket. To build your own JeeLink, you need an Arduino Nano and an RFM12B for 433/868 MHz. The TX 29 DTH-IT is an alternative sensor system. Only recommended for real tinkerers and technology enthusiasts.