# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Normally Closed (NC) | 常闭
A normally closed (NC) contact pair is closed (in a conductive state) when it, or the device operating it, is in a de-energized state or relaxed state.
Normally Open (NO) | 常开
A normally open (NO) contact pair is open (in a non-conductive state) when it, or the device operating it, is in a de-energized state or relaxed state.
Notifications | 通知
Electronic alerts (push messages and/or text messages) that are sent to your smartphone when an event you specify is triggered.
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