This machine pronounces, in a monotone voice, a string of numbers used by intelligence agencies for one-way shortwave radio communication with their agents in enemy countries. This machine belongs to a German collector who has a vast collection of various spy-gadgets. There were many machines of this particular model produced in East-Germany for usage within the DDR itself or other communist bloc nations, like the Soviet Union or Cuba.
The voice for this machine comes from a swapable printed circuit board with EEPROM's on it. In this video another board was inserted, which contained the Spanish voice samples, in the so-called Speech/morse generator, or "Sprach/morse generator", as it was referred to in Germany. These EEPROMS enabled the machine to pronounce the numbers and other characters in Spanish or other languages depending on which card was inserted on the back of the machine.
Although this particular machine does pronounces "Atencion" it is however, in my opinion, mostlikely not the same female voice from the wellknown Cuban numbers station V2/V2a, by the sound of it.