I have a BNIB Derale #16749 Adjustable Fan Controller with Relay. All specs can be found on the
Derale website.
I bought this when I bought my RND fab radiator, but I am going to let my FiTech system control the fan, so I need to get a regular Fan Relay...so I don't need this one.
I paid $75 from RND for this. Most online stores (summit, jegs, etc) have them for $58 plus shipping...
Pictures are the first time I opened the box. Everything you need for the electric fan relay/controller is included.
Asking $57 shipped.