Product review (1 stars): What you see pictured is NOT what you get
Both of the other reviews indicate that this is a solenoid valve assembly but it is NOT!  The picture you see is NOT what you get.  The picture is for the solenoid valve assembly (which is what I thought I was buying).

This particular product is the transformer.  It was a stupid mistake on my part trusting the review and the pictures.  Too bad shipping was $9.00, as now it's not worth it to send it back.

You want this product instead if you're looking for the solenoid valve assembly:
<a data-hook="product-link-linked" class="a-link-normal" href="/4040-Solenoid-Valve-Assembly/dp/B000V5O23K/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">4040 Solenoid Valve Assembly</a>