3KW/2KW Swimming Pool & SPA Hot Tub El Ectric Water Heater Thermostat, Precision - 3KW_1

Designed to maintain water at a safe maximum of 40 °C (104 °F). When cold water is introduced, the unit increases temperature at roughly 6 ~ 8 °C/h. The thermostat operates automatically: it heats until the preset temperature is reached, then stops and will restart on its own once the temperature falls by a few degrees. Built-in ultra-high temperature protection trips if the temperature exceeds 49 °C, cutting power; the protection includes a reset button for recovery.