aux water tender, short all black N&W version.

[propmeup1]

I picked up one of these short aux water tenders at a show. No box or info on it. I see it has a light at each end that come on the same time dimly. I opened it up and found the LEDs and a board inside.  Is there a way to program this tender or what ? I don't know anything about it.   Before i stumbled across this tender I used two extra 611 type aux tenders and cut the m down and made two all black tenders to put behind my Y6b types.

Thanks for any help,
KTB