Keystone 8352 is an integrated building automation system that provides advanced control and monitoring of HVAC and other building systems. It features energy management capabilities, a full color graphical user interface, data logging and alarming functions, and the ability to communicate with other building systems. It can manage various HVAC functions such as air handling, heating and cooling, and humidity control. It can also be used to control and monitor lighting, access control, and security systems. It is designed to be user friendly and simple to install, making it a popular choice for many commercial buildings.