FIELD: remote control alarm systems which protect against intruders. SUBSTANCE: signal at device output is not present if no alarm is detected and detectors are in operating order. When intruder crosses electric axis between antennas of detector and retransmitter, alarm signal is sent to device output. Corresponding device has one receiving station and set of transmitting stations which are located at guarded objects. EFFECT: increased detection capacity, increased reliability, simplified design. 5 cl, 6 dwg
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