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When my pir2 or door sensor turn lights on .I need time option 1 - 3 min to auto off.

I have also been confused about Inching mode and Loop timer for quite sometime but have got some insight after tinkering with them for a few months now. Will share my two cents, hope it helps folks here. Loop Timer: I will not get into the basics but clear the confusion over random switch off in Loop Timer mode as reported by many users. The reason why people seem to have random turn off/on and not after pre designated interval as set by them is because they fail to consider the start time, which is absolutely critical for Loop Timer. Let me clear with the help of an example. Lets say we want to turn off a light after 10 mins of certain activity (PIR Sensor, Door Sensor or Just switch On), if we set the start time at 00:00 am midnight along with a past date in the Loop Timer settings, then the switch would turn off an every 10 min multiple in every hour. Suppose I turn on light at 7:00:00 am sharp, then the light would turn off at exact 7:10:00 am as desired. But If I were to turn on light at 7:34:18 am, then the next 10 minute multiple would happen at 7:40:00am, when the light would turn off thus resulting in turning off in 5min 42sec only. What confuses people is the fact that they generally tend to ignore the start time, which results in random turn off whereas it is switching off as per our set timing. The software takes the earlier of the two event happening as a trigger, the max being the time set by us. Hope this clears the Loop Timer confusion. Inching Mode: In inching mode (for Sonoff Basic) you can define the duration in half second interval for a current maximum of 3600 seconds (1 hour). When we turn on the inching mode and define the duration in seconds, the device turns off exactly at the specified interval irrespective of the start time (unlike Loop timer) functioning like a Timer everytime. So taking the last Loop Timer example, if we want to turn off the light after 10 mins, we have to set Inching duration to 600 seconds (10mins). This would result in the light turning off exactly after 10 mins every time it is turn on. There are a few limitations with Inching Mode, the first being that maximum permissible inching time as of date is 1 hour; the second being that it is only available in Sonoff Basic in firmware upwards of 2.5.x (not sure about TH devices) and not available on POW devices. The third being that it does not support startup mode as ON or Keep, meaning if you were to link the Light to a physical switch to Turn On every time the switch was turned On, it would not work in inching mode and you would have to turn it on through the app or through some trigger to make it work properly. Hope I was of some help in clearing the air about the two features. Happy Sonoffing!!