TORQEEDO #1914. MAGNETIC KEY. In the event of an emergency, you need to kill the power to your motor quickly. The magnetic key was introduced to the Travel 503 and 1003 and included on all Cruise series and the Ultralight. - You need the special magnetic key in order to get power to your motor. - It comes with a cord that you can attach to your person so that if you fall out of your vessel, your motor will stop right away.