I was in Costco yesterday in Austin TX and they had a bunch of these stud sensors:
Except for the color this is identical to.
I was looking at the mostly identical pdf files for the two products and I noticed that the Costco version claimed to have a 1 year warranty but had no address or phone number. While in the Franklin PDF had an address and phone number for the warranty. I called that phone number from the Franklin PDF and they told me that if I had any problems I could return the Costco version to Costco, and reluctantly confirmed that it was an identical product.
A bit expensive even at 35 bucks , but seems like a great tool to have.
Store Locator [costco.com]