Controls; Wifi Control for Swimming Pool Heaters; the Heater Reader is a Stand Alone, Wifi Device Designed for the Retro Fit Market; 24, 7 Control and Access from Anywhere in the World through an Apple or Android App or Web Application; Basic Control of the Heater and Pump and well as the Ability to Set Schedules; Email Alerts if the Heater Doesn't Fire for Some Reason Or, Based on your Preference Settings, Simply When you Want to Know; But. the best for Last. the Heater Reader Does the Math for You, Pool and Spa ...