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DC 24V Self-locking device of emergency door 24V DC input type having an improved current supply stucture
DC 24V Self-locking device of emergency door 24V DC input type having an improved current supply stucture
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机译：具有改进的供电结构的紧急门24V DC输入型DC 24V自锁装置
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摘要
More particularly, the present invention relates to an emergency door automatic locking device of DC 24V input type having an improved electric current supply structure, more specifically, In the situation, it is necessary to release the rooftop door and open the roof exit to secure the entry and exit path. Especially, it is necessary to improve the system that the DC 12V voltage is lowered by applying the DC 24V fire protection current, The present invention relates to an emergency door automatic lock device of DC 24V input type having a current supply structure.;
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