Anyone Use Deep Heat Projectors

[Snagrio]

They do not create UVB, just heat. Although for my leopard gecko, she comes out and basks under the DHP even during the day now, and her UVB bulbs overlap the heated zone so that she is getting the benefit too. My males still has a CHE and though it overlaps with his UVB bulb, I rarely see him out before the light are off. Same with the female before I made the switch.

While on the subject, are UVBs on a timer like one would for regular daytime lighting? Or are they on 24/7? I never actually used UVB for anything before so I never learned how it's utilized.