No the E+ does not have a built-in thermostat, a remote wall mounted thermostat is required for each heating zone. For full details please see the E+ installation manual (https://www.reznor.co.uk/wp-content/uploads/2024/08/Reznor-e-Installation-Manual-EN-2024-06-D301600-Iss-0-print-quality-1.pdf).
Does the E+ heater have a built-in thermostat?
Information on Reznor's range of warm air heaters