The Honeywell Home T4398A1021 is a line voltage mechanical thermostat designed for controlling electric heat systems operating at 240V. It is suitable for use in Home,commercial and industrial settings to regulate the temperature of electric heating systems. With a focus on simplicity and reliability, this thermostat by Honeywell offers a straightforward solution for maintaining a comfortable indoor environment. Its brand reputation and specific model indicate a durable and efficient product for managing electric heating systems effectively.