Remote control wall switch socket contacts required to achieve, and electromagnetic contactor Contactor, pneumatic and hydraulic contactors contactors, three different voltage is divided according to AC and DC and semiconductor several. Commonly used mostly AC electromagnetic contactor, AC contactor switching solenoid-walls, mountain-shaped static and dynamic core, moving main contact together, moving together, moving off assistance and contact interrupter system and other major components. The principle is that when the core of the coil is energized to produce suction, the armature (or moving magnet) pull, since the contact support member and the armature together, the armature to the core (yoke) movement, together with the contact support member contacts with the movement of the assembly thereon, into contact with the stationary contact, the circuit is turned on. Once the trip coil current, voltage suddenly disappeared or significantly reduce led wall switch, the armature spring rebound from the yoke wall switch 118, while the primary and secondary moving contact from the fixed contact of the circuit off. The switch has dual control and single control wall switch plates distinction, dual control each unit more than a single control terminal. A light in the room can be controlled outside the room can also be controlled called dual control, dual-control switch can be used when single control, but not for single control switch dual control. 1, classified according to the switch to start the switch to points mode: pull switch, rotary switch, pull down the switch, button switch, rocker switch touch switch, reset switch, tap switches 2, commonly switch connection classification according to press the switch. Connection to the point: single control switch, dual-control switch, bipolar (dual) dual-control switch. 3. Press the Size by Size Score: 86, 118 type, 120 geographical distribution: Most domestic use 86 switch (80% of the area), with some parts of 118, 120 less. All kinds of wall switches, Vicki Electric (online consultation), wall switch provided by the Hebei Tianyi Electric Co. Hebei Tianyi Electric Co., Ltd. (www.tianyidq.com) Hebei Xingtai, wall switch leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Tianyi Electric leadership with the staff warmly welcome all inquiries negotiations to create a better future Tianyi Electric.