There is a touch sensor in the lamp as touch lamp switch.
Our touch light is similar to helios touch light which is known as hexatile touch. They are all touch sensitive. Simply touch the center of our touch sensor lamp, the lamp will be turned on and off. Each touch of the light results in ON or OFF.
Here is how to make the touch lamps work:
Firstly, link the touch modulars well to the power supply;
Secondly, touch the center of the lights to turn on;
Thirdly, touch again to turn off.
Note: Please check the links if you can not turn the touch lights on.