This option is only available with Evolution networks. This feature can override any other control of selected luminaires used in a defined emergency scene. Despite the name, Emergency Smart Switching is not for providing true emergency lighting.
The Casambi device with Emergency Smart Switching enabled should be powered via a separate mains switch from all other devices in the Casambi network.
A scene is assigned to the Emergency Smart Switch option. When the power to the device is switched ON, the assigned scene is activated and will only be disabled when power to the device is switched OFF again. i.e. Any luminaires used in the Emergency scene cannot be controlled until the Emergency device is powered OFF.