Laxmi (also spelled Lakshmi) is the Hindu goddess of light, beauty, good fortune and wealth. Sri Laxmi was the daughter of the sage Bhrigu and took refuge in the ocean of milk when the gods were sent into exile. Laxmi was reborn during the Churning of the Ocean. As soon as the gods saw Laxmi, they all fell in love with her beauty. Shiva claimed Laxmi as his wife, but since he had already taken the Moon, her hand was given to Vishnu, whom Laxmi herself preferred.
Laxmi was reborn as his consort each time when Vishnu incarnated. For example, Laxmi was Sita to Rama, Radha and later Rukmini to Krishna. As you can see, the images on the temple all merge into one. They are just showing different aspects of the same one. Being the consort of Vishnu, the preserving principle, Laxmi also signifies the love and grace which sustains life.
One hand raised in blessing and the other has gold coins flowing from it. Her two upper hands hold lotus flowers symbolizing love and grace and she is standing on a lotus. Her red dress symbolizes prosperity.