Wireless weather station with transmitter. Wireless transmission of outdoor temperature via up to 3 transmitters. Display of indoor temperature and humidity. Maximum and minimum value function. Radio clock with date display and alarm. Weather forecast and air pressure trend. Includes transmitter 30. 3157, without batteries (2x 1.5 V AA for the base station, 2x 1.5 V AAA for the transmitter). TFA Dostmann. With over 1000 weather and measuring instruments, the German company TFA Dostmann is one of the leading companies in the industry in Europe. The TFA range is characterized by its own innovative technologies and exclusive designs. It is continuously developed in collaboration with meteorologists, IT specialists, and designers.