A small sound effect occurs when the touch switch is activated or deactivated. This is due to the use of relays in the design of switches. A relay is an electromechanical device that is responsible for opening or closing an electrical circuit depending on the signals it receives. When the touch switch is turned on or off, the relay performs its function, accompanied by a slight click. This sound effect may only be noticeable in cases where the environment is quite quiet, as it is very muffled and inconspicuous. Therefore, the sound signal heard when the touch switch is turned on or off is a normal phenomenon due to its design and operation.
