SONOFF 4CHPROR3 is 4-Gang WiFi Smart Switch, Works with eWeLink App, supports voice control with Alexa and Google Home.
To enable the Inching mode, Should enable and disable the Interlock mode first. Then you will see the "Inching Settings" on the setting page.
Inching mode: in this mode, you can set it to make the channel be off after a scheduled time.
As the video shows:
Channel 1 is off after 1 sec.
Channel 2 is off after 2 sec.
Channel 3 is off after 3 sec.
Channel 4 is off after 4 sec.
![](https://i.ytimg.com/vi/Y76nr2ekgxg/maxresdefault.jpg)