(1) - KEYSTONE TECHNOLOGIES CC579TP MAGNETIC COMPACT FLUORESCENT BALLAST (UL) - OPEN-BOX NEW. YOU GET ITEM PICTURED. ORIGINAL PACKAGING NOT INCLUDED. SHIPPED WITH USPS FIRST CLASS MAIL.
This ballast lights up a single 9W UV-C lamp. No starter required. Cheaper than purchasing a whole UV sterilizer. Just wire in series with the lamp on the line side. Using on a 2-pin G23 type bulb.
Only con is installation because it's a little heavy and bulky, I've got it screwed to the underside of a cabinet.