This is a Graylab model 525 electronic darkroom timer with foot switch. I'm selling this for a friend, so I'm not thoroughly familiar with it. But I did plug it in, and it seems to work. The lights lit, I could set a time, it counted down when I pushed the start button, it beeped when it finished, and the metronome one second tone works.
$25 shipped. PayPal OK. Ten day return privilege, refund minus shipping.