Electronic device

An electronic device, comprising:

• a first portion and a second portion, the electronic device being disposed in an opening of a connected space, the electronic device and a wall having the opening dividing the connected space into the first space and the second space, the first portion being located in a first space having a first ambient temperature, and the second portion being located in a second space having a second ambient temperature;
• an electric power generating device configured to generate a first thermo-electromotive force in responding to the first ambient temperature being higher than the second ambient temperature, and to generate a second thermo-electromotive force in responding to the first ambient temperature being lower than the second ambient temperature;
• a load device configured to obtain the electrical energy and operate on the electrical energy;
• and
• a switching component configured to match a connection between an output port of the electric power generating device and an input port of the load device based on an electrode property of the thermo-electromotive force, to supply electrical energy that matches a corresponding electrode property to the load device, wherein respective electrode properties provide opposite corresponding electrical or energy characteristics corresponding to the respective first and second thermos-electromotive forces.