The ZON-0500 is an intelligent, microprocessor based, expansion module zone control for the 1000 series controls. Capable of controlling up to 4 zones per control, the ZON-0500 can also be used as a standalone unit and can handle multiple priority selections. The controller can be daisy-chained to provide unlimited coverage and flexibility for virtually any number of zones. The ZON-0500 allows for pump or valve control, and is capable of enabling a boiler. The layout of the control makes for easy wiring and simple setup, allowing for quick installation and minimal on-site time.