4W Electronic Ballast for 4W UV or Florescent Bulbs
We use these in our Upgrade Kits for Bulb issues in Air purifiers. Just supply 110v to the Black and White wire and then put the red wire to both pins of one end of your bulb and the blue wire to both pins on the other side of your bulb. Works every time. Should work on any 4W UV or Florescent bulb.