Wireless identification device as early warning system for emergency vehicles uses non-variable, non-adjustable and non-manipulatable radio frequency onto which coded data are modulated

摘要

The wireless identification device has a transmitter element and a receiver element in separate housings that use a non-variable, non-adjustable and non-manipulatable radio frequency for identification of the transmission unit with respect to the receiver unit. Coded data are modulated onto the non-variable, non-adjustable and non-manipulatable radio frequency.