The tri energy yantra is placed on the main door of worshipping place, to make all the atmosphere pious.
Trishula is one of the weapon of Lord Shiva. As per Hindu mythology, it is said that the Trishakti Trishul Yantra which has Hindu symbols of Om and Swastik inTrishul is wielded by Lord Shiva. ... Trishakti Yantra is a combination of three symbols -Swastika, Om and Trishula. Each symbol has an unique significance.