A light emitting module includes a body, first to Mth (wherein, M is an integer of 2 or greater) light emitting devices provided on the body to be spaced apart from each other, and a turn-on controller controlling the first to Mth light emitting devices to turn on. An mth (1≦m≦M) light emitting device among the first to Mth light emitting devices comprises first to Nth (wherein, N is an integer of 2 or greater) light emitting cells connected to each other in series. An nth (1≦n≦N) light emitting cell among the first to Nth light emitting cells includes at least one light emitting structure, and the turn-on controller simultaneously turns on or turns off the nth light emitting cells of the first to Mth light emitting devices.