FIELD: light warning. SUBSTANCE: invention relates to redundancy of warning lamps positioned in places difficult to reach and critically important. Device has signalization cells containing nonredundant and redundant warning lamps, two-position ring thyristor pulse counters and electronic transistor keys. By pressing test button positive supply pulses go through bus from power supply source and provide for no-contact switching off of redundant and switching on of nonredundant lamps immediately in all signalization cells. If nonredundant warning lamp burns out in any signalization cell proper electronic transistor key ensuring supervision over presence of supply voltage across nonredundant lamp switches on thyristor of second position of corresponding ring thyristor pulse counter and consequently cuts in necessary redundant warning lamp. EFFECT: enhanced operational reliability and safety. 1 dwg
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