the invention u043eu0442u043du043eu0441u0438u0442u0441u00a0 to alarm. to improve the accuracy of u0438u0437u043eu0431u0440u0435u0442u0435u043du0438u00a0 u00a0u0432u043bu00a0u0435u0442u0441u00a0 u043eu0431u043du0430u0440u0443u0436u0435u043du0438u00a0. the device contains a 1 and a 2 emitting transmitting cables, pulse transmitter 3, delay elements 4, receiver 5, a selector 6 range, block 7 of u0441u0438u0433u043du0430u043bu043e in alarm, the detector 8, u0444u043eu0440u043cu0438u0440u043eu0432u0430u0442u0435u043bu044c 9 u0441u0438u043du0445u0440u043eu0438u043cu043fu0443u043bu044cu0441u043eu0432.in the device u043eu0431u0435u0441u043fu0435u0447u0438u0432u0430u0435u0442u0441u00a0 u043fu043eu0441u0442u043eu00a0u043du043du0430u00a0 sensitivity regardless of u043fu0435u0440u0435u0441u0435u0447u0435u043du0438u00a0 milestone that u043fu043eu0437u0432u043eu043bu00a0u0435u0442 choose a fixed optimal threshold u0441u0440u0430u0431u0430u0442u044b u0432u0430u043du0438u00a0 block of alarms. the device u043eu043fu0440u0435u0434u0435u043bu00a0u0435u0442 place u043fu0435u0440u0435u0441u0435u0447u0435u043du0438u00a0 with specified accuracy with lower power transceiver. this u0441u0432u00a0u0437u0430u043du043e so that all the signals u043fu0440u043eu0445u043eu0434u00a0u0442 contained one long line. 2).
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