Standard double walled construction, inner chamber made out of stainless steel sheet and outer that of thick mild steel sheet duly solving enamel painted and gap filled with glass wool for temperature insulation complete with double walled door with lock & key arrangement. Temperature between 4oC to 6oC is maintained by a digital temp. controller-cum-indicator and trigger audio-visual alarm in case of temp. fluctuations. A door operation alarm is also provided along with power failure alarm as a safety device. Drawers with index cards have been provided to hold blood bottles or blood bags. A sealed compress-or unit and cooling coils running throughout the chamber are provided for thermal uniformity. Panel provided with pilot lamp, controls etc. Supplied with cord & plug etc. and equipment to work on 220V AC 50 Hz single phase.