Smart Switch Is Evolved On The Basis Of Electronic Wall Switch

The smart switch is evolved on the basis of the electronic wall switch. It is a subversive revolution to the original rocker-type mechanical switch. Since Edison invented the light bulb in 1879, there has been a simple mechanical switch. More than a hundred years have passed. The contemporary wall switch has no fundamental changes and no breakthrough development, and still uses the mechanical switch method. It was not until 1992 that electronic technology began to enter the field of wall switches. At first, it was only used for voice-activated delay switches in public corridors. Touch the delay switch. In 2000, with the wide application of human pyroelectric sensors, the delay switch has made great progress. The human body induction switch gradually replaces the voice-activated delay switch and the touch delay switch. Also bred, the knob-type dimmer switch is mainly suitable for incandescent lamps, and the knob-type speed control switch is mainly suitable for fan motors. Although the above switches have entered the electronic mode from the traditional mechanical mode, their functions are relatively simple. They are only used in specific occasions, and cannot impact and replace the traditional mechanical switches. In addition, due to the wiring of the existing wall switch The vast majority of the pattern is only a single live wire access method, the neutral wire is directly connected to the load, and there is only a live wire without a neutral wire in the switch, which cannot form a loop and cannot supply power normally, which limits the introduction and application of many electronic technologies. The development of electronic technology in wall switches has been hovering at the initial stage of simple functions, and there are always only five types: touch delay switch, voice-activated delay switch, human body induction delay switch (PIR), knob dimmer switch, knob speed control switch .