Learn Turkish: Sensörlerin duman algılaması halinde panoya yönelmek tehlikelidir. - In case the sensors detect smoke, heading to the panel is dangerous.

This is the formal conditional structure from your current lesson. It uses the verbal noun algılama (detecting) plus the possessive suffix -sı to link it to the sensors. Followed by halinde (in the event of), the whole phrase literally means 'in the event of their detecting' or 'in case they detect'.

Why is the subject Sensörlerin in the genitive case instead of just Sensörler?

In Turkish, clauses built with -mA verbal nouns act like noun ownership constructions. You are grammatically saying 'in the case of the sensors' detecting.' Because of this ownership relationship, the subject of the verbal noun must take the genitive case.

If smoke is the direct object being detected, why is it just duman instead of the accusative dumanı?

We only use the accusative case for specific, defined objects. Here, the sensors are detecting any smoke in general, not a specific cloud of smoke we previously mentioned. Therefore, duman remains in its bare, indefinite form.

Why is yönelmek (to head) in the -mAk infinitive form rather than taking a possessive suffix like algılaması?