ESP8266 Community Forum

According the the specification (see attached table image) current draw during light-sleep should max out at about 2ma. For this low current draw the wifi radio must be disabled. Does this occur as part of the light-sleep function call, or must the wifi radio be disabled prior to calling the light-sleep function.

The light sleep call handles it for you

As soon as the ESP module enters light sleep mode, the wifi radio becomes disabled.