The PM Plus temperature controller has a bright, full-color front-panel display with easy-to-read characters and color-coding, making the display visible from many angles. It also has a smooth-touch keypad, which eliminates rubber buttons that can wear out from use and harsh environments. The keypad also eliminates contamination points and creates a better seal on the front of the controller. It is backward-compatible with legacy EZ-Zone PM controllers but offers user upgrades such as an intuitive menu flow that allows the controller to be configured easily. It offers Bluetooth connectivity with the EZ-Link mobile app for remote access capability and full descriptions of parameters and error codes.