Wireless Weather Station H10515 Dcf Manual Link -

: The station will automatically search for the DCF77 time signal (a radio signal from Frankfurt, Germany) upon startup. This can take up to 7 minutes.

: This device operates on the 433 MHz frequency. Ensure no large metal objects or other wireless devices (like routers) are directly between the sensor and the base station. wireless weather station h10515 dcf manual link