The DA778F-HK 12V DC refrigeration unit electric control box is a high-performance, multi-functional refrigeration system controller, designed as a core control component for 12V DC refrigeration units. As a dedicated 12V refrigeration control module, it integrates precise control for compressors, 3-way evaporator fans, condenser fans, and defrost valves, delivering stable, efficient operation for refrigerated trucks, cold chain transport vehicles, 12V mobile refrigeration systems, cold storage facilities, and commercial refrigeration appliances. This patented refrigeration control box (Patent No. ZL202020947423.5) is engineered to meet the demanding requirements of 12V mobile cooling systems, making it the ideal refrigeration unit control solution for aftermarket replacement and OEM integration for 12V refrigeration equipment.

• Centralized control for refrigeration compressor (CMP), 3-way evaporator fans (EF-1/EF-2/EF-3), dual condenser fans (CF-1/CF-2), and defrost valve (DEF), ensuring coordinated operation of the entire refrigeration unit
• Optimized control logic for energy efficiency, reducing power consumption while maintaining consistent cooling performance for 12V cold chain transport and mobile refrigeration
• Compatible with 12V DC refrigeration systems, perfect for 12V refrigerated trucks, 12V van refrigeration units, and 12V mobile cold chain equipment

• Built-in dedicated fuses for all circuits (CF/EF/CMP/DEF/Power) to prevent overload, short-circuit, and overcurrent damage to 12V refrigeration components
• Backup fuse storage inside the enclosure for quick on-site replacement, minimizing downtime for 12V refrigeration units and cold chain transport operations
• Sealed, rugged enclosure for dustproof, waterproof, and vibration-resistant performance, suitable for harsh environments of 12V refrigerated trucks and industrial refrigeration

• Color-coded wiring terminals with clear specifications, simplifying installation for refrigeration unit technicians and HVAC professionals
• Pre-configured fuse ratings (DC12V: CF 30A, EF 30A, CMP 10A, DEF 10A, Power 5A) for plug-and-play use with most 12V refrigeration systems
• Standard connector design (DJ7041-4.8-21 / DJ7031-4.8-21 / DJ7021D-2.8-11) for easy replacement of old 12V refrigeration control boxes in refrigerated trucks, cold storage units, and commercial refrigeration equipment

• Heavy-duty sealed enclosure to protect internal control circuits from moisture, dust, and mechanical vibration, extending the service life of the 12V refrigeration unit
• Patented refrigeration control technology (ZL202020947423.5) ensures superior stability and reliability compared to generic 12V refrigeration controllers
• Batch traceability (Batch No. 20260207) for quality assurance, meeting the strict standards of 12V refrigeration equipment manufacturers and cold chain logistics companies

This DA778F-HK 12V refrigeration unit control box is suitable for a full range of 12V refrigeration equipment:

• 12V Refrigerated Transport: 12V refrigerated trucks, 12V refrigerated vans, 12V cold chain trucks, 12V mobile cold rooms, and 12V refrigerated containers for food, pharmaceutical, and fresh produce transport
• 12V Cold Storage & Industrial Refrigeration: 12V cold storage warehouses, 12V industrial refrigeration units, 12V walk-in coolers, and 12V freezer rooms
• 12V Commercial Refrigeration: 12V supermarket display cases, 12V commercial freezers, 12V refrigeration cabinets, and 12V food processing cooling equipment
• Aftermarket Replacement: Ideal replacement control box for damaged or outdated 12V refrigeration unit controllers in all types of 12V DC refrigeration systems

• Package Includes: 1 x DA778F-HK 12V Refrigeration Unit Electric Control Box, 1 x Set of Backup Fuses, 1 x Installation & Wiring Diagram Manual
• Warranty: 12-month manufacturer warranty against defects
• Technical Support: Professional after-sales support for 12V refrigeration system installation, troubleshooting, and maintenance
• Customization: OEM/ODM support for 12V refrigeration equipment manufacturers and bulk orders for cold chain logistics companies

Design Picture: