This clip over wall plate adaptor can be easily fixed to an existing single or double wall power outlet. You can use this to add USB charging outlets to your wall socket without hiring an electrician to rewire. Furthermore the wall plate cover has 2x AC power sockets and 2x USB outlets. The USB ports has an output of 3.4A in total to allow you to turn any wall outlet in a mobile device charging station. Embedded with surge protection and switchable night light, with sensor. Suits a wide variety of wall plates.