Machine Safety device

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Across
  1. 5. Overrides all system and remove power
  2. 6. Physical Barrier between hazard and personnel
  3. 7. shut systems down
  4. 9. Halt an automatic door that s closing if resistance is detected
Down
  1. 1. ensures that all potential energy in a system is neutralized
  2. 2. real-time safety status indications
  3. 3. beam of light creates invisible barrier
  4. 4. user operated devices
  5. 8. control many other safety devices