The IR33Z7HR20 is a high-performance electronic temperature controller from CAREL, designed for precise temperature regulation in refrigeration and HVAC systems. It combines advanced control logic with a user-friendly interface for reliable and efficient operation.
- Model: IR33Z7HR20
- Type: Electronic temperature controller
- Display: Large, easy-to-read LED display
- Inputs: NTC or PTC sensor compatibility
- Outputs: Multiple relay outputs for compressor, fan, and defrost control
- User Interface: Configurable buttons for fast parameter adjustment
- Functions:
- Temperature control
- Defrost management
- Fan control
- Alarm monitoring
- Communication: Optional serial interface for remote monitoring and integration
- Mounting: Panel mount design for easy installation
- Applications: Commercial refrigeration units, cold rooms, display cases, and HVAC systems







