1.Three working modes: This WiFi smart switch has a self-locking mode that enables independent control of four devices, an interlocking mode that ensures that only one device is in the on state, and an inching mode that supports automatic timed shutdown 2.Convenient installation and control: This WiFi relay module is installed on a DIN rail and uses WiFi direct connection technology. It can be remotely controlled and monitored in real time through the Ewelink App, making it easy to operate 3.Intelligent timing and scene management: This timing switch includes timing, delay and cycle timing, and with the scene control function, it improves the quality of life and energy efficiency 4.Multi-platform compatibility and shared control: This smart relay switch is compatible with Echo and Google Home, and supports voice control of the switch. It allows sharing control permissions with family members to enhance the experience of the whole family