Easy Installation: No neutral wire required. 86mm x 86mm. Snap-on wall plate without screws. The included instructions guide you step by step through a simple installation. LED Backlight: Each touch switch button is backlit. The blue backlight clearly indicates the on/off status, making it easy to find in the dark and not affecting your sleep. Safety Touch Control: High-speed touch response wall switch with shock-resistant glass panel. The flame-retardant PC housing and module box never catch fire. 1-Way Switch: Turn a single interior light on or off with this 1-way electrical switch. Does not support Wi-Fi, is not compatible with Alexa, is not dimmable, and cannot be used as a 2-way switch. Any questions, please feel free to contact us. We will provide you with a satisfactory answer.