It fits for regular standard and decor receptacle, <b>NOT</b> recommend to GFCI and USB receptacles, the stabilizing post may be cut off to be used in these receptacles. <br> <br>You can choose to install SMD307 over your AC outlet's wall plate and secured with the included mounting screw or just plug it directly into the outlet without screw. <br> <br>The intelligent night-light on the top will turn on or off automatically responding to the intensity of surrounding light. You can also switch it off separately by <b>auto/off switch</b>.  <br> <br> Perfectly designed sockets that plugs can be easily put in and pulled out to enhance user’s experience.  <br> <br>ETL & FCC listed. Integral copper bar to improve product durability and safety. Complies with DOE VI. Made of flame retardant material ABS which able to withstand high temperature.