<p>PURPOSE: A control device of a grouped lamp is provided to improve convenience of an installation operation of a lamp group by adding a specific code to each lamp group. CONSTITUTION: An amplifier(20) amplifies a sensing signal of a sensor(10). An A/D converter(30) changes the amplified sensing signal to a digital signal. A microprocessor(40) outputs a lamp lighting signal according to an output signal of the A/D converter. A DIP switch(50) receives a coded signal through a bus line(60) and codes the control signal of the microprocessor. A trac(70) connects a commercial power source(90) to the lamp according to a control signal of the microprocessor.</p>
