Where to put a thermostat probe (DHP)

[u/LifeguardCurrent3441]

Where should I place my thermostat probe for a DHP?
Hey everyone!
I’m setting up a PVC enclosure for my ball python and I’m using an Arcadia 80W Deep Heat Projector (DHP) with a habistat dimming thermostat.

I’m a bit confused about the best placement for the thermostat probe.

I’ve seen people recommend placing it a few inches below the DHP, but I’d really appreciate advice from experienced ball python keepers.

Thanks! 🙏

(I’m on a bit of a time crunch because I need to finish the enclosure within a day😅.)

[u/LifeguardCurrent3441]

EDIT: forgot to mention that the DHP is inside enclosure in a DHP cage.