PM Plus is an enhanced version of the EZ-Zone PM temperature controller. It is more intuitive than its predecessor and features an improved user interface for easier set up, programming and readability. A bright, full-color front-panel display with easy-to-read characters and color coding is visible from many angles. A smooth-touch keypad eliminates the legacy rubber buttons that can wear out from use and harsh environments. The keypad also has no contamination points and creates a better seal on the front of the controller. The controller is backward-compatible with legacy EZ-Zone PM controllers but offers user upgrades such as an intuitive menu flow, allowing for easy configuration.