Abstract: A load control switch (1) is provided with a terminal module (2) to which electric wires are connected and which is installed on an installation frame established on a wall surface of a building; and a switch module (3) which is detachably mounted to the terminal module (2) and which turns a load on or off. The load control switch (1) is also provided with an operation handle (4) detachably attached to the switch module (3). The switch module (3) may be an electronic switch or a mechanical switch; an electronic switch may additionally be provided with delay function, timer function, a motion sensor, and so on. This makes it possible for a user to freely replace one load control switch with another having different function without electrical work being required.