COSORI Programmable Energy Saving Remote Control Electrical Outlet Switch (Learning Code, 3Rx-1Tx) Learning function allows you to match any remote and outlet to each other regardless of the frequencies; digital remote operation - no interference with other electronic devices Simple and easy to use, no installation required. Remotely switch on/off any appliance at the push of a button Features low standby power consumption and built-in child protection feature; 30m/100ftrange (works through doors, floors, and walls) Extra outlets and remotes can be purchased separately. Please check our store; Outlets remain off after a power outage to save energy Newest version  smaller size only covers one outlet (R&TTE/ETL/FCC approved)