this is the brand heater that I have:
https://www.amazon.com/Lakewood-5500.../dp/B000FD594O
seems almost everyone on this forum uses either Vivarium Electronics or Herpstat thermostats. I use VE-300. the heater has settings for 600/900/1500 watts. The VE-300 is rated for max 1200 watts, so be sure your thermostat can handle the load. I use the 600 or 900 watt settings.