Dimmer Thermostat

I’ve been looking, these two seem to be pretty legitimate for long term usage. I’ll be needing one for a 20 gallon enclosure. I’m using a heating lamp with a built in thermostat but I didn’t notice the part in the description saying it was a non temperature control thermostat, so I’ll need to buy a new one just looking for one that is reliable. Any tips or suggestions on another option is welcome.