Security card "confession"

Hello everyone, my name is "security card." The rectangular body, the plastic material, and the thin body make people feel small and sleek. He also wrote four characters, "Forbidden to close," and clearly told the masters of my purposes. My brothers and sisters are spread throughout the workshop and are always accompanied by every worker in the workshop to provide them with reliable security protection.

I also have a partner, his name is "security lock", he can lock the device's local start switch. His advantage is that his character is "a glutton" and only his master can open him. If the workers’ masters can use both of them while maintaining the equipment, this will give the worker's work a great deal of security and eliminate potential safety hazards.

If we bother us and forget to use the two when we maintain the equipment, then the consequences are disastrous. Imagine if a worker master climbed a conveyor belt or drilled a roller while performing an equipment check. But before that, he did not hang me on the local switch, nor locked my partner locally. Switch on. At this time, the master of the production line is preparing to start production. What will happen, surely everyone knows.

Know our importance, "the card of life" and "the lock of life" is the best interpretation of us. Masters, don't forget about us when it comes to maintenance and repairs.

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