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