I am planning to buy SONOFF® Mini but i have a question
Does "self return" switch means push button switch or switches we use for door bell or regular normal switch?
if normal switch is in ON position and I turn OFF the appliance from the App then what would happen when I manually flip the switch to OFF when the appliance is already turned off by the App? Will it work like 2 way switch or keep it OFF even with switch?
It will change the state of the device on every time you change the switch level. In your case , when the Normal / Physical switch was ON And you turned OFF the appliance from APP. Now when you will change the status of physical switch from ON to OFF , the appliance will ON.