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VLS 086A RF SDD is a combined solar direct drive vaccine refrigerator and water-pack freezer. Refrigerator net capacity is 57.63 L; the model is Grade A and currently WHO-prequalified under E003-157.
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.
Technical specifications
| Power | Solar Direct Drive |
| Refrigerator | +2…+8 °C |
| Gross / net refrigerator volume | 77 / 57.63 L |
| Autonomy | 128:20 h |
| Freeze protection | Grade A |
| Humidity control | Passive |
| Freezer | 50 L, for water-packs |
| Water-pack freezing | 2.4 kg/24 h |
| Water-pack storage | 28 × 0.6 L |
| Dimensions (H × W × D) | 925 × 1190 × 750 mm |
| Net / gross weight | 152 / 160 kg |
| WHO PQS | E003-157 |
The freezer compartment is intended for water-packs and is not a general-purpose long-term plasma or biological-sample freezer.
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.
Sources: WHO E003-157 · Vestfrost VLS 086A RF SDD · VLS 2026 / WHO PQS.