Transmitter (switch) operating principle: The button is manually pressed to generate mechanical energy, which is then converted into electrical energy. Wireless signals are then emitted for \"on\" and \"off\" functions, which are received by the receiver. This enables control of lights and other electrical appliances. The transmitter requires neither wires nor batteries and can be installed anywhere thanks to its reliable performance, environmental friendliness, and easy installation. The receiver operates with a voltage of 110-220V, with both neutral and live wires from lights and other electrical appliances. With a maximum operating current of 10A and an output power of up to 2200W, it enables wireless control of lights and other devices. Thanks to its compact size (L50 x W22.8 x H32 mm), the receiver can also be mounted inside the wall cavity of the original switch. In open spaces, the wireless control distance can reach up to 200m. While the effective range is 60 meters indoors, wireless signals can be partially obstructed by metal, electrical current, and other obstacles. Since there is no need to rewire or change batteries, the installation of the transmitter is simple and smooth, saving time and money. It also offers a certain degree of water resistance, although it does not meet professional waterproofing standards. It can be used safely even with wet hands.