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VLS 304Ae AC is an mains-powered energy-efficient ice-lined vaccine refrigerator with 98 L net capacity and a +2…+8 °C range. The current WHO record lists the model as prequalified under E003-110e.
Monitoring under the updated WHO PQS requirements
WHO requires a basic Level 1 electronic monitoring device for vaccine refrigerators, plus an integrated Level 2/3 device or a 30-day electronic temperature logger. Vestfrost offers EMS Levels 1–3: Level 1 provides local logging and USB access; Level 2 adds a local display and alarms; Level 3 adds remote data transmission. The EMS level and sensor package must be stated in the supply specification.
VLS 304Ae AC technical specifications
| Model | VLS 304Ae AC |
| Power | AC with integrated voltage stabilization |
| Temperature range | +2…+8 °C |
| Gross / net volume | 157 / 98 L |
| Hold-over time at +43 °C | 55:30 h |
| Stable energy consumption | 0.60 kWh/24 h |
| Freeze protection | Grade A |
| Climate class | T, tested at +43 °C |
| Refrigerant | R600a |
| Dimensions (H × W × D) | 910 × 920 × 700 mm |
| Net / gross weight | 104.8 / 132.2 kg |
| Baskets (top + bottom) | 3 + 2 |
| WHO PQS | E003-110e |
Compliance note. WHO PQS is an international prequalification of a specific model and configuration for immunization programmes. It does not replace Ukrainian medical-device conformity assessment. Procurement must separately verify the current WHO record, local market documentation, calibration and the exact scope of supply.
Official records and technical data: WHO E003-110e · Vestfrost VLS 304Ae AC · what changed in VLS 2026.