Something that would act as a scene sensor would also work. EG: If you had a ring alarm you could set a Ring motion sensor at the bottom of the stair. Or even a door trigger. Really though anything that an be used as a routine trigger in alexa would work. Meaning you don't have to have an Alexa device there, or use a voice command.

  @Carl 

 

Just a reminder, more that I've oft suggested a cordless companion switch similar to what Leviton uses.   The scenario above would certainly be a fine example of how such a remote switch would be useful.

 

Perhaps if you searched for "Leviton Anywhere Companion" you'd fine an excellent example of what I mean.

  @dafish 

 

Could you possibly elaborate on this scenario? I don't really understand how it would connect to my existing setup

  @AshleyQuick 

 

I can try, you'll have to tell me more about what you do and don't know or understand from below.  

 

An Alexa routine, or for that matter a Samsung Smart things or an IFTT acccount, creates an action script of user defined complexity that executes when a "trigger" event occurs.  A trigger can be many things.   A few of the many include time, a smart switch being turned on (or off), or in this case a Ring motion sensor.   In your case, and if you had a Ring Alarm, a Ring Motion Sensor (they stick up anywhere and are battery driven), seems to be a solid option for you.  You'd create a routine name, perhaps "remote stairway trigger" (or whatever) and use the sensor motion detection as the trigger.  The action would be basically "turn on hallway light, wait x minutes, turn off."

 

Now I don't do this, but I have tested it and could/might.  You have to have the ring alarm, but it doesn't even need to be armed.  Just installed and running along with a Ring motion sensor placed on whatever wall you want to detect motion.

 

If you're an alexa user look for "Routines, then add, then smart home, and note your kasa switches are shown (or should be).  So would you Ring motion sensors if you have them.  From there just follow the prompts (select the motion sensor, say "when motion detected, then next, then light to turn on, when "turn").   Test.   Once working add to the routine a "wait" (look in for it below "smart home" a ways), then the delay until you want the "off" command.  Then add the light again and this time specify "off".

 

Hopefully this gets you close.