Hi, I have the old version of this unit. Please keep in mind that at some point the thermal regulator and thermal switch will stop working. You’ll notice the unit will keep shutting off. On the old unit the thermal cut off switch is 110 degree C, which you will need to be replace. It’s a fairly easy replacement/fix. My unit cut off switch lasted 4 years before replacing, not used too often, only when soap making. They sell a pack of Thermal cut off switch if you need them replaced at some point, just search “thermal cut off switch 110 C”