FIELD: automotive industry; antitheft devices. SUBSTANCE: device has coder, AND gate, storage unit, first and second shift registers, controlled switch, OR gate, NOR gate, NAND gate, first and second AND-OR gates and low frequency filter. To unlock ignition system and start the engine, vehicle lighting devices should be switched over in definite sequence. Correctness of sequence is checked by gates and elements connected in preset mode. EFFECT: enhanced reliability of protection. 1 dwg
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