<p>➀ An IR remote switch is a wireless device that uses infrared signals from a remote control to operate electrical appliances, commonly used in home automation.</p><p>➁ The system consists of an IR receiver module, a signal processing circuit, and a relay to control the connected load.</p><p>➂ A standard IR remote control can be used, and the circuit diagram and parts list are provided for building the IR remote switch.</p>