This smart wifi module with mini design suits for wall switch box,and easily hide it into your hidden wall switch box of your traditional switch without any influences on your original decoration style to make it smart. More importantly,your traditional switch and this smart module can work independently under non-interfering mode. Can be used as a 1-way or 2-way circuit (2 switches control 1 light); simply connect to 1 of the 2 switches and convert the connected device into a smart one (for 2-way circuit) Take full control of connected appliances with timers, schedules and countdown (1/5/30 mins, 1 hour, etc.) with the app; share control with family and friends for added convenienceControl with your smart phone via Smart Life/Tuya app without a separate hub. It allows you to use your voice to control home devices and enjoy hands-free experience.