5.5KW Digital Electric Water Heater Thermostat — Fast Heating for Swimming Pool, SPA, Hot Tub, Bath

Manual-reset overtemperature control: If an unexpected high temperature of 60 occurs, the temperature switch will cut power to the system. You must switch off the main power, fix the underlying issue and wait until the temperature drops below normal, then press the 'Reset' button to restart the heater. Unique ST series control system: The ST series is the latest generation featuring our proprietary control platform. This advanced system replaces the traditional mechanical water flow sensor with a modern digital temperature sensor and improves temperature-related control functions. Intelligent self-diagnosis: The controller continuously monitors the operating condition of each heater component and responds quickly by showing a related hint message for any event to help prevent damage or malfunction. If a fault is detected the heater stops immediately and the corresponding hint is shown on the panel so the user or technician can identify the problem. Customer safety is the highest priority.