The compact radio module (60% smaller than its predecessor Micro Smart Switch) is placed in a wall box right behind the normal switch. The switch is no longer directly connected to the load but acts as input device for the AEOTEC insert that is controlling the load. The switch only sends control signal to the insert which controls the load then again. The solution works with all switch design. You can use a momentary or a toggle switch. It’s recommended to use wall boxes with 65mm depth. But smaller boxes with only 45mm depth can be used also if there is enough space behind the switch. The available space depends on the size of the traditional switch, the dimensions of the wall box and the amount of additional cabling placed in this box.