Induction heater for HLT recommendations

[scruff311]

After much tinkering with my setup, I've decided I'd like to heat my HLT via an induction heater. I need the ability to keep the water at a specific temperature, either with some built in mechanism, or using an external thermostat in which case something that could simply be turned on/off as needed i.e. you don't need to press power or any additional buttons to get it to 'cook' after supplying power to it. Additional requirement would be the capacity to bring 5-8 gallons of water to 180-185F.

Thanks!