Franzis Verlag Assembly kit Franzis Verlag Gewitterwarner zum Selberbauen 65238 14 years and over

Thunderstorms come seemingly suddenly and often have disastrous consequences. Whether Agriculture, home or sports activities outside: Only those who law - early warned, retirement planning. The Franzis storm warning helps you to protect against storm damage. Build your own Storm Warning! This kit makes it easy for you: The board is largely ready equipped. Therefore, the design is child's play. After only a few simple steps, it protects your electronic storm warning against unwelcome weather surprises. The device evaluates the electromagnetic signals a storm in the frequency range around 500 kHz and recognizes when a thunderstorm in the air. Simple additional experiments illustrate the correlation. Three warning levels indicate on the distance to the thunderstorm. At the latest when the red LED is lit, you should use the last backup. The low power consumption of the device ensures that you are protected throughout the summer. Set your device simply by the window and leave it to the summer is switched on. On...