The extension cord with environmental condition sensing ability has a plug for connecting to a power source, and includes a main body, a sensor unit, and a current control unit.  On the main body, there are provided a first socket group and a second socket group, which are electrically connected to the power source via the plug.  The sensor unit is electrically connected to the second socket group and adapted to sense an environmental condition to thereby generate a signal.  The current control unit and the sensor unit together form an electric circuit, and the current control unit receives the signal generated by the sensor unit to thereby turn on or cut off electric current being supplied to the second socket group.

A primary object of the present invention is to provide an extension cord with environmental condition sensing ability to overcome the problems in the conventional extension cords.
To achieve the above and other objects, the extension cord with environmental condition sensing ability according to the present invention has a plug for connecting to a power source, and includes a main body, a sensor unit, and a current control unit.  On the main body, there are provided a first socket group and a second socket group, which are electrically connected to the power source via the plug.  The sensor unit is electrically connected to the second socket group and adapted to sense an environmental condition to thereby generate a signal.  The current control unit and the sensor unit together form an electric circuit, and the current control unit receives the signal generated by the sensor unit to thereby turn on or cut off electric current being supplied to the second socket group.
The extension cord with environmental condition sensing ability has a plug for connecting to a power source, and includes a main body, a sensor unit, and a current control unit.  On the main body, there are provided a first socket group and a second socket group, which are electrically connected to the power source via the plug.  The sensor unit is electrically connected to the second socket group and adapted to sense an environmental condition to thereby generate a signal.  The current control unit and the sensor unit together form an electric circuit, and the current control unit receives the signal generated by the sensor unit to thereby turn on or cut off electric current being supplied to the second socket group.

利用紅外線自動感應偵測使用者在場與否以控制延長線插孔之開啟與關閉。