The touch desk lamp switch doesn't work when touching the desk lamp with your hand. The reason for the switch failure is that the connection wire of the touch circuit is broken, or the circuit is damaged. The second reason is that the bulb is damaged and doesn't work. Change a lamp to try, and you can tell whether the bulb is damaged or the lamp is damaged.
The touch switch can only be effective when the luminous circle is on. It may also be because the battery is low. Try again after fully charging. The touch switch is a kind of advanced switch. When the capacitance generated by the switch is approached by human body parts, such as fingers, arms, etc., the chip will transmit instructions, and the chip will control the computer. At this time, the light can be turned on or off, which is very practical.