Insert a symbol in to a formula

Hi, hope someone can assist, i want to add some arrow syimbols in to a formula, so that when the formula works out it shows an up arrow for higher or a down arrow for lower, i am using this formula at the moment because i dont know any better but it works, putting in the word up or down:

I have entered the following formula in to a cell: =IF(S3<R3,"DOWN","UP") it works however i want to replace the word Down and up with the relevant arrows symbol. How do i do this?

Thanks