61U (regular model) Normally open 61N (regular model) Normally open 30 (regular model) Normally open 61U (upgraded model with lights) Normally open 61N (upgraded model with lights) Normally open 30NO (upgraded model with lights) Normally open 77U (regular model) Normally open 77N (regular model) Normally open 77U (upgraded model with lights) Normally open 77S (upgraded with lights) Normally open 77N (upgraded with lights) Normally open 77U77N77S magnetic stripe 61U61N magnetic stripe 30 30B magnetic stripe 30NC normally closed
Decoration and construction content:
Hydropower engineering
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