Description
The Johnson Controls MR4PMUHV-12 is a professional-grade MR4 Four Stage Defrost Control engineered for reliable temperature and alarm management in demanding HVAC and refrigeration applications. Operating on a 24 Vac power supply, this controller delivers precise defrost cycle management with a tight ±1.8°F accuracy, ensuring consistent equipment protection and energy efficiency.
Key Features
- Four-stage defrost control logic for precise cycle management
- 24 Vac operating voltage for compatibility with standard HVAC control circuits
- ±1.8 degree temperature accuracy for reliable setpoint control
- Integrated temperature and alarm management functions
- Includes two temperature sensors for comprehensive system monitoring
- Includes a relay for direct equipment switching and control
Temperature & Alarm Management
The MR4PMUHV-12 provides both temperature monitoring and alarm management in a single compact unit. The dual-sensor configuration allows the controller to monitor multiple points in a refrigeration or HVAC system simultaneously, triggering alarms and defrost cycles based on real-time conditions. This helps prevent ice buildup, equipment damage, and unnecessary energy consumption.
Package Contents
- 1x Johnson Controls MR4PMUHV-12 Defrost Control Module
- 2x Temperature Sensors
- 1x Relay
Specifications
- Brand: Johnson Controls
- Model / SKU: MR4PMUHV-12
- Control Type: MR4 Four Stage Defrost Control
- Supply Voltage: 24 Vac
- Temperature Accuracy: ±1.8 Degrees
- Sensors Included: Two (2)
- Relay Included: Yes
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