We bought one on amazon that will turn off the lamps at a certain temperature (give or take a specified threshold): https://www.amazon.com/gp/aw/d/B01FTQ669S?psc=1&ref=ppx_pop_mob_b_pd_title

I was also super paranoid about the temperature and got two lamps, which has been really helpful...if only to prevent me from waking up in the middle of the night to check on him those first couple of weeks :) That one has two plugs controlled by one thermometer.