Enda-ETC-Series-PID-Temperature-Controllers-Panel-Mount-Enda-ET4420-230-p-A-48-x-48-x-87mm-panel-mounting-PID-temperature-controller-with-a-choice-of-selectable-control-outputs-including-relay-alarm-&-SSR-There-are-inputs-for-a-range-of-Pt 100-temperature-sensor-types-&-the-unit-has-2x-4-digit-LED-displays-with-parameter-control-set-via-front-panel-keys-p-Enda-ET4420-230-PID-Temperature-Controller