Sonoff Dual is an affordable WiFi enabled 2 gang smart switch that control two home appliances or electrical devices independently. In other words it is equal to two Sonoff Basic switches however, inherits the advantages such as easy installation and operation, quick WiFi access with same remote control through APP EweLink available for iOS and Android.
Similarly It can be connect to a wide range of appliances to switch them remotely. Just install eWeLink app in your smart phone and power up your Sonoff Dual WiFi electrical switch, follow a couple of instructions and turn two home appliances i.e. a Light / Fan / TV and lot more device ON/OFF independently just tapping on your smart phone screen. It is just a first level, What’s about talking to your home appliances? Yes, Sonoff Dual turns any two of your device into a voice controlled smart devices because it is compatible with Amazon Alexa, Google Assistant etc.
The button on Sonoff Dual 2 gang WiFi light switch is not an ON/OFF switch, it is only for pairing Sonoff Dual with WiFi network by long press to enter WiFi pairing state. You can set single/repeat/countdown timing schedules to turn on/off at a specified time, and also share to others so that they can be controlled together.