| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent unnatural lights-out and lighting delay when an operation mode changeover switch is switched in a load controller in which a sensor unit equipped with a human body sensor is separated from a main body and a detection signal is transmitted and received between the sensor unit and the main body wirelessly by using a radio wave. <P>SOLUTION: While a human body sensor 11 keeps detecting presence of a human, a load controller keeps transmitting a detection signal by using a radio wave periodically or irregularly. When an operation mode changeover switch 20 is switched from a continuous start mode or a continuous stop mode to an automatic mode, if a load control unit 23 has received the detection signal within a prescribed time, it continues lighting of a lighting device 3 or turns on the lighting device 3 immediately. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
