Our Pentair Mastertemp 250na heater is toast and needs to be replaced. Easiest approach would be to replace with the same brand and model, but I wanted to see if anyone makes a heater with a remote. The heater is used exclusively for a spa and my wife constantly wants the temperature adjusted. It's a pain to get out and make adjustments. I would love a waterproof remote she can use to move the temperature up and down a degree. Does anyone offer this?