Johnson Controls MR4PMUHV-12 Control
Johnson Controls MR4PMUHV-12 Defrost Control with Relay and 2 Sensors The MR4 Series provides temperature, alarm, defrost, and evaporator fan management. The MR4 Series provides defrost cycle management with hot gas or electric heat defrost and defrost termination based on time or temperature. The MR4 Series consolidates the functions of a temperature control, a digital temperature readout, a defrost cycle timer, and a defrost termination device.
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