Features
1. Supports a wide operating voltage range of AC 85–265V (50/60Hz), making it compatible with power grid conditions across various countries and regions.
2. Equipped with inputs for temperature/humidity/dew point sensors and door frame temperature sensors, as well as TRIAC outputs for load control, allowing for flexible adaptation to diverse freezer control requirements.
3. Intelligent defrosting and temperature control algorithms: A core function involves intelligently regulating the power of door frame heating wires and glass door heating films based on door frame and dew point temperatures, thereby preventing condensation on freezer doors in humid environments.
4. The product has undergone rigorous reliability testing to ensure long-term, stable operation under various harsh conditions.
5. Supports the Modbus communication protocol, facilitating connection to a host PC for system commissioning and centralized monitoring.
Introduction
The Intelligent heating controller is an intelligent control module specifically developed for commercial refrigeration equipment. Designed with a core focus on precise anti-condensation, energy-efficient operation, and long-term reliability, the product employs real-time monitoring and closed-loop control of temperature and humidity in the door frame and glass door areas. It proactively eliminates the risk of condensation while ensuring optimal product visibility and operational safety, making it ideal for commercial environments such as supermarkets, convenience stores, and restaurant chains.
This controller represents a highly reliable, feature-integrated, and rigorously validated control solution for commercial refrigeration cabinets. It is far more than a simple switch; it is a professional control platform equipped with intelligent algorithms, robust communication capabilities, and the ability to withstand harsh operating environments. Its design and testing processes reflect a steadfast commitment to long-term stable operation, energy efficiency, and compliance with global market standards.
Power and Load Interface
| NO. | Definition | Description |
| 1 | LINE | Live wire input terminal, connected to AC mains live wire to supply power for the internal power supply of the controller. |
| 2 | LOAD | Controlled live wire output terminal, software‑controlled internally for load connection. |
| 3 | NEUT | Common neutral line for input power and load power. |
| 4 | PE | Protective earth, connected to chassis and ground for electric shock prevention. |
Interface Description

Temperature, Humidity and Condensation Sensor Input Interface
| NO. | Definition | Description |
| 5 | GND | Dew point sensor GND |
| 6 | DATA | Dew point sensor signal |
| 7 | PWR | Dew point sensor V+ |
RS-485 Communication Interface
| No. | Definition | Description |
| 8 | FG | Host computer communication GND |
| 9 | RS485- | RS-485 bus receiver inverting input / driver inverting output. Input voltage range: -15V to 15V |
| 10 | RS485+ | RS-485 bus receiver non‑inverting input / driver non‑inverting output. Input voltage range: -15V to 15V |
Door Frame Temperature Sensor Input Interface
| No. | Definition | Description |
| 11 | TEMP | Connecting the temperature sensor to the glass door frame |
| 12 | TEMP | Connecting the temperature sensor to the glass door frame |
ABOUT US
Founded in 2001, KFLY Electronic Tech. (Shanghai) Co., Ltd. is a foreign-invested high-tech enterprise and a Specialized, Refined, Differential and Innovative enterprise. We specialize in the R&D, production and sales of power electronic products, focusing on industrial special power supplies, intelligent control and special lighting sectors, and provide reliable hardware, software products and customized solutions for global customers.
The company’s three core product categories are LED explosion-proof power supplies, intelligent industrial control boards and special lighting products. Widely applied in explosion-proof industrial scenarios, cold chain equipment, water purification and disinfection, industrial automation, laboratory equipment and many other industries, we can offer customized product development services according to customer requirements.
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