We tested to make it compair film about goes up to threshold

If something is in front of robot vacuum than how it goes up to threshold  

We made a 1cm threshold and we tested which robot vacuum is the best




The first one is Samsung robot vacuum



1cm is nothing for Samsung



Second is Mamirobot vacuum cleaner



Oh~For Mami robot 1cm is nothing too~!!





Third is LG



Good~but one side wheel can not go...it stocked 




Firth is irobot!!



irobot can not go up...the bumper stocked in 1cm threshold



As you can see and as you know go up threshold is very important
 
No one knows what is in front of robot vacuum cleaner~!!