This Watlow temperature controller is a EZ-Zone PM Express Panel Mount model with the part number PM4C1EC-AAAAAAA. Watlow?s temperature controller is 1/4 DIN and is a PID Controller with Universal Input. Power Supply is 100-240 VAC. The Output 1 is a Mechanical Relay 5 amp form C, and the Output 2 is a Switched dc. The temperature controller has NO standard bus, and NO isolated input option. Compare this EZ Zone temperature controller with the obsoleted SD4C-HCAE-AARG model it replaces.

Selection guide for Watlow EZ-Zone Temperature Controller