Mini Body Designed 40*40*21mm mini body, which is working with most of amounting boxes, switches and wall sockets.It is not only small, but also powerful. Maximum power reaches 1800-3450W, it can be used for most of home appliances and lightings. Support Two-way Control This smart DIY switch could be used for your old 2 way control switch. Especially, you still available to control the old switch manually after isntalled it. App Remote Control Remote control lightings or appliances of your house via Smart Life app from anywhere at anytime. No hub required. Voice Control The wifi DIY switch works with Alexa and Google Home Aistant to conveniently control the appliances with simple voice command when you are on go. Timing Function Create schedules to automatically turn the home appliances or lightings on/off. Helping you saving energy and electric fee. Relay Status Setting Never worry about power failure, you can set this switch to restore the state after power on. Group Control Set all of your smart switches in a group by Smart Life app. Then one-click to turn/off all of your appliances or lightings by smartphone. Smart Scene Creating your own scene to trigger ON/OFF home appliances by departure mode, home mode, temperature, humidity, or other environmental conditions.