Because the time is set exactly to the second via the DCF77 signal and also the change from winter to summer time takes place automatically. The digital display is large and easy to read, ideal not only for home, but also for the office, waiting room, entrance or reception area. The clear display shows the indoor and outdoor temperature along with the date with the written day of the week. To determine the outdoor temperature, place the enclosed transmitter outdoors. The values are then transmitted via radio with a range of up to 70 m to the radio-controlled clock. Great additional function: A temperature alarm can be set in such a way that an alarm signal sounds, for example, in frost or at extremely high temperatures. This practical device can also be used as an alarm clock. The simple and clear design in wood look fits in every environment, no matter whether you want to hang up the radio clock or place it on the wall.This text is machine translated.