-30°C Upright deep freezer MUDF-2A is a micro-processor controlled single solid door standalone cold storage freezer. Forced-air cooling causes uniform air circulation for optimized airflow. Automated defrost cycles facilitate frost-free storage interiors. Polyurethane insulation with magnetic seal rings ensures low energy consumption. System alarms include temperature limits, door ajar, low voltage and power off conditions. Secured wafer door lock system prohibits unauthorized user access to preserve sample integrity.