Category Usage Scenarios Characteristics Advantages Disadvantages Material & Design Home care, hospital environments Durable plastic/metal construction (ISO 13485 medical-grade materials) Lightweight yet sturdy; modern transparent front panel for component visibility Less compact than all-plastic models; requires careful handling for metal parts Noise Level Bedroom use, shared living spaces 28 dBA (quieter than a whisper) ▲ (Industry: 32 dBA avg.) Minimizes disturbance to sleep partners; ideal for sensitive environments Higher-end models may still require external soundproofing Pressure Customization Severe/moderate sleep apnea treatment Adjustable APAP range: 4–20 cmH₂O ▲ (Base: 4–15 cmH₂O) Adapts to varying apnea severity; improves therapy efficacy Requires professional calibration for optimal settings Certifications EU market compliance CE-certified (EN 60601-1), RoHS-compliant (no hazardous substances) Ensures safety and environmental compliance; meets EU regulatory standards Lacks FDA approval in the U.S. market Preheat Feature Cold climate use, winter months Built-in preheater (warms air to 37°C ▲, industry avg. 35°C) Enhances comfort in low-temperature environments Increases power consumption by ~15% compared to non-preheated models Portability Travel, home use Compact design (20cm×15cm×8cm), 1.5kg weight ▲ (Industry avg. 2kg) Easy to carry; fits in luggage or bedside drawers Limited space for accessories (e.g., humidifier attachments)