Aquafine UV Steralizer

[Popeye]

I have been given a Aquafine dw300 Uv Steralizer. This has a stainless steel cover and bracket. I was wondering is this unit safe to use with a saltwater set up.? I know most peoples uv are plastic like the turbo twist etc. Any one have an aquafine or used one before? Help appreciated.
Thanks
Tony