A power outlet capable of providing power in a controlled manner is disclosed. The power outlet may include a notification unit, a power input unit for receiving a power, a power output unit for outputting the power, a switching unit having a controlled switch for controlling the whether the power input unit is connected to the power output unit, in order to control a power supply mode of the power outlet, a configuration unit for generating a configuration signal, and a control unit, according to the configuration signal, for setting up an initial time value, driving the notification unit to generate a first notification signal, and counting down from the initial time value.