PS2 remote question

[st00dent]

My gf recently bought me a ps2 off ebay and I would like to get a remote control for it. I've had a look and a lot of the auctions say that the remotes only work on newer PS2 models.
How can I find out if mine will be ok?
Ta

 

[st00dent]

No, it's the older style.
But the auctions I've looked at have quoted model numbers rather than just saying "new thinner models"