Exo Terra Timer Thermostat. I used to use this, but I'm selling it because I no longer need it. This product is a timer thermostat that connects to heating and lighting equipment to manage the temperature and lighting inside the cage. It works without any problems, but please consider that it is a used item. I didn't intend to sell it, so I have the instructions but not the box. It will be shipped in simple packaging. Thank you for looking.