Yes, subject to certain criteria, the library accepts external members. Please take a look at our external members page guide for more details https://library.tus.ie/getting-started/external-members/
There are day passes as well as yearly external membership options, a fee may apply depending on whether you are TUS alumni or not. There is also a Leaving Certificate Study Scheme (free), you will find info on all of the different options on the above page.