Sound the Alarm!

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Across
  1. 2. Every alarm is
  2. 3. Advise the caller of CEI
  3. 4. 52-B-3
  4. 6. Subway stations
  5. 12. For elevator alarms, use
  6. 13. Industrial Gas
  7. 14. Suffix between J and O
  8. 16. 52-C-0
Down
  1. 1. 56-A-2
  2. 5. 4th party caller
  3. 7. 56 PDI b
  4. 8. Type of Elevator
  5. 9. Ringing of a bell indicates a person is
  6. 10. When in doubt elevators are considered
  7. 11. A source of Carbon Monoxide Poisoning
  8. 12. Send signals in the form of flashes
  9. 15. Type of alarm