| Share | Phrase |
|---|
| 30.63% | failsafe [security] circuit |
| 15.31% | failsafe [security] operation |
| 13.65% | failsafe [security] signal |
| 8.69% | failsafe [security] method |
| 8.58% | failsafe [security] detector |
| 7.62% | failsafe [security] datum |
| 3.90% | failsafe [security] system |
| 3.33% | failsafe [security] design |
| 2.89% | failsafe [security] function |
| 2.86% | failsafe [security] pulse |
| 2.48% | failsafe [security] purpose |