You can probably find a ZooMed thermostat at your local pet shop too. It's not digital but you'll need a thermometer anyway to dial into the correct temperature. They'll have probe thermometers there too.
i honestly forget pet stores actually sell thermostats lol. also OP while you're out, pick up an infrared temp gun: you'll need to dial in your temps somehow and a temp gun is the easiest way to ensure accurate readings of the enclosure floor.