Which Herpstat to buy?

[Darkbird]

Can a herpstat 2 be set up to run a UTH and a lamp? That is, to have temp control on UTH with one of the probes, and the second to function as a timer on a light?

Yes, it can. You can even set one channel up to run a humidifier if you purchase the optional humidity probe. I have a herpstat4 running 3 separate racks in my snake room and the fourth channel runs the humidifier that I use in the winter.