This is the one I found and in the Q and A it said it was on/off. If there’s another you’re aware of, I’d love to know ! Zoo Med ReptiTemp RT-600 Digital Thermostat Controller, Black https://www.amazon.com/dp/B07FYXX9L3/ref=cm_sw_r_cp_api_glt_i_S8TRZ1DYQ5TPXWJH7M3S