| 摘要 |
FIELD: personal use articles. ^ SUBSTANCE: indicator comprises an alarm unit installed with an owner with a receiver of electromagnetic oscillations, and a source of electromagnetic oscillations installed onto at least one carried item that belongs to the owner and has a frequency of the receiver tuning and energy that ensures their stable detection with the receiver in the radius that does not exceed the specified value of the distance from the source. Besides, the source of electromagnetic oscillations is a miniature transmitter equipped with an internal source of power supply and having code-pulse modulation, being programmed together with the receiver using parameters that include at least two from the list: period of transmission of code sequences of radio impulses, a binary digit that corresponds to the code sequence, a carrier frequency of radio impulses and radiated capacity. ^ EFFECT: expansion of functional capabilities of carried items loss indicator. ^ 6 cl |
