Setting up the H10515/DCF is straightforward, generally requiring 2 x AA batteries for both the main unit and the remote sensor. Upon inserting batteries, the unit enters a search mode for both the outdoor sensor and the DCF signal. It is recommended to replace batteries annually to maintain sensor accuracy.
: Keep the sensor near the base station for about 3 minutes. The base station will beep and start detecting temperature and humidity. wireless weather station h10515 dcf manual link
This small, weather-resistant unit is placed outside your home and transmits data back to the main console. Based on discussions on community forums, the sensor likely uses a frequency of for transmission. It requires two AAA alkaline batteries. Setting up the H10515/DCF is straightforward