For a description of Maya’s Area Light, see Create > Lights > Area Light.
See Type.
See Color.
See Intensity.
Controls how quickly the light’s intensity decreases with distance. The Decay Rate setting has no effect at distances less than 1 unit. The default setting is No Decay.
For more information on light decay, see Light decay.
In the Attribute Editor, click the arrow to display the drop-down list and select a Decay Rate. In the options window, type a value or use the slider.