it is solely designed and developed for controlling the heating element of the water heater so as to provide its users with comfortable water and it can be turned on or off via pressing the on/off button and the temperature can be adjusted via pressing up or down button. Nonprogrammable Blue Backlight/Keypad Lock HeatingElementIndicator Max/Min Temperature Retainable Plastic enclosure Technical Parameters LCD: 20*40 (mm) Water Heater 220VAC 9.1A Power Consumption 1980 Watt Thermostat 220VAC Relay Current: 16A Temperature Measuring Range: 0-100???