In Jain Dharma, Dharaṇendra yantra is traditionally associated with protection, auspiciousness, and removal of fear or obstacles when used with श्रद्धा, proper विधि, and pure conduct.

However, it should be understood in the Jain way:

• It is not a guarantee that accidents or mishaps will never happen.
• Its purpose is more for spiritual protection, inner strength, and auspicious support.
• Real protection in Jainism comes mainly from ahiṃsā, satya, aparigraha, samyak darshan, samyak jnan, samyak charitra, and right conduct.
• If a person keeps the yantra with devotion, but also lives carelessly, the yantra alone is not considered a substitute for caution and right action.

So, yes, devotees may use Dharaṇendra yantra for protection from dangers, fear, and adverse influences, and some believe it helps reduce mishaps through auspiciousness. But in Jain understanding, it should be seen as a supportive spiritual साधन, not as an absolute shield against all accidents.

The best approach is:

• keep faith,
• maintain pure conduct,
• do pratikraman and bhakti,
• and remain careful in daily life.

That is the Jain perspective.