4ie smart wi fi thermostat bright porcelain the warmup 4ie smart wi fi touchscreen thermostat offers features including smartgeo and easyswitch it can be controlled from a tablet computer or with the warmup myheating app for ios and android the 4ie doesnt require programming and works to ensure your home is always at the temperature you want when you arrive the myheating app is simple and easy to use the 4ie learns how you use your heating and how your home responds to changes in tempera