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Clyxgs Metal Emergency Stop Button Switch, 16MM 5A 5-250VAC 6-Feet Emergency Stop Power-Off Round Self-Locking Waterproof Mushroom Cap Switch with 2 NO & 2 NC: Amazon.com: Industrial & Scientific
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batteries - Wiring Emergency Stop button to disconnect two independent circuits - Electrical Engineering Stack Exchange
![batteries - Wiring Emergency Stop button to disconnect two independent circuits - Electrical Engineering Stack Exchange batteries - Wiring Emergency Stop button to disconnect two independent circuits - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/p00hg.png)