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| Brand | Alphavita |
|---|---|
| Origin | Liaoning, China |
| Manufacturer Type | Authorized Distributor |
| Product Category | Domestic |
| Model | MDF-539 |
| Instrument Type | Low-Temperature Freezer (≥ −60 °C) |
| Configuration | Upright |
| Effective Volume | 504 L |
| Internal Dimensions (W×D×H) | 649 × 614 × 1262 mm |
| External Dimensions (W×D×H) | 793 × 770 × 1806 mm |
| Power Supply | Single-phase 220 V / 50 Hz |
| Rated Power Consumption | 312 W |
| Temperature Range | −20 °C to −30 °C (0.1 °C adjustable, ambient 5–30 °C) |
| Net Weight | 154 kg |
| Exterior Material | Powder-Coated Steel |
| Interior Material | Powder-Coated Steel |
| Door Configuration | Dual External Doors with Locking Latches (compatible with padlocks) |
| Compressor | Hermetic Scroll Compressor (400 W output) |
| Refrigerant | R-404A (environmentally compliant blend) |
| Control System | Microprocessor-Based Digital Temperature Controller with Password-Protected LCD Display |
| Safety Features | Dual-Stage Temperature Alarm (high/low), Power Failure Alarm, Sensor Fault Detection (temperature & compressor), Compressor Thermal Protection, Filter Clogging Alert, Built-in Backup Battery for Post-Power-Outage Temperature Readout |
| Standard Accessories | One Set of Keys, Defrost Scraper, Four Nylon Clamps (2× small, 2× large), Adjustable Wire Shelving, Four Casters with Locking Brakes |
| Certifications | CNFDA Medical Device Registration Certificate, ISO 13485:2016, ISO 9001:2015, ISO 14001:2015, OHSAS 18001:2007 |
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