Timetable function: set the and countdown to create a scene. You can set the schedule to automatically turn on/off lights, fans or devices according to your daily habits. For example, you can set corridor lights to turn on when you go home at night and turn off when you leave home in the morning Voice control: It can be used with Alexa and Home instead of pressing the switch button every time. You can easily turn on/off the household appliances through voice commands without using a hub. It is very convenient to create scenes on Alexa or Home, especially when your hands are full Anywhere application control: Even if you are not , you can remotely control lights, routers, fans, televisions, coffee makers or any other devices below 10A/1100W by clicking on the mobile application Smart Life. No hub is required. It is compatible with most wifi routers (only compatible with 2.4GHz wireless networks). It allows you to DIY many smart projects: smart lights, fans, garage doors, humidifiers, thermostats, etc. Group control: create a group for all smart relays for one key control. A smart relay can be controlled by multiple mobile phones and shared with your family. Everyone can easily control it. It is very suitable for hard to reach electrical appliances and equipment without on/off switch. It is an important accessory of home automation system. Compact design: this smart wifi module with mini design is applicable to the wall switch box and can be easily hidden in the hidden wall switch box of the traditional switch without affecting your decorative style, thus making it smart. More importantly, your traditional switch and this intelligent module can work independently in the interference free mode. Colour:As Shown Material:plastic Package Contents: 1 x smart relay Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.