The configurations of a two way wiring device are provided in the present invention. The proposed device includes a case having a first side, a second side opposite to the first side, a third side formed between the first side and the second side and an open bottom passing therethrough a first conducting wire, wherein the third side includes a first side segment, a second side segment and a middle segment located between the first and the second side segments, and a conducting wire guiding pathway formed on the case and the first conducting wire passing the pathway and wired out of the case through one of the first side segment and the second side segment.