Incoloy800 steel Thermostat element very safty and long life.very easty to install and replace, no need do inter adjustment.
Suitable bathtub &spa tub /hot tub 2KW /110V-120V,
Easy to set your desired termperature within 45 ░ C, when temperature up to your setting temperature it will stop automatically. when temperature is dropped down, it will heat up water until your set temperature.
suitable for bathtub or hot tub with thermo cover, we suggest water capacity not more than 400 US gallon
with 1.5" outlet , min 0.35MPA pressure,suggest work with at least 0.25HP