You can modify the time it takes to send the codes , there is a thing on the internet setup , I havent changed mine for some time so cant remember exactly , but there is a programable delay , I think it defaults to 100 or 500ms , but you can take it down to 10ms - I might be wrong tho. What I really like about these remotes is the way it allows my wife to set it all up with one touch when power goes down , she is technologically challenged and all she has to do is press watch TV and it just works.