The Thermostat Lennox ComfortSense 3000 L3522C is a programmable thermostat with 2 heat and 2 cool settings, making it suitable for conventional heating and cooling systems. It features a 5-2 day programmable schedule, corded electric power source, and a white rectangular design made of plastic. The thermostat is compatible with universal systems and can be wall-mounted for easy access. With a low voltage of 24V and push-button control style, this thermostat offers convenient system switching with an auto setting. It also has smart home compatibility with a proprietary smart home protocol.