Ākāśadhātvīśvarī

Ākāśadhātvīśvarī, goddess of space.

Five Female Buddhas:

Ākāśadhātvīśvarī,
Locanā,
Māmakī,.
Paṇḍāravāsinī, and
Tārā.

Ākāśadhātvīśvarī is white in colour, and her name means "The Sovereign Lady of the Sphere of Infinite Space".

In each hand she holds a lotus which blooms at the shoulder. On the right shoulder is a dharmacakra, and on the left is the vajra-bell.

Ākāśadhātvīśvarī is the consort or prajñā of Vairocana

This bīja, and mantra are from a sadhana and accompanying puja composed by Dharmacari Vessantara.

Source

http://www.visiblemantra.org/akasadhatvisvari.html