ProfiMaster PMU03 Temperature range from -10°C to -80°C. - Cabinet casing made of galvanized, electrostatically white enamelled steel sheet. Foamed-in-place urethane in a high-pressure process with excellent thermal insulation values. - Inner chamber is constructed from stainless steel with smooth surface and clear of any obstacles, therefore easy to clean and very efficient. Two doors (inner and outer) with special seal to prevent ice build-up. Security lock in the heavily insulated, double sided front door prevents unauthorized use. - Micro-processor driven temperature controller with digital display (LED), maintenance-free and insensitive to vibration. Controller stability locally ±0,5 K. - Heavy-duty refrigeration system, maintenance-free, with industrial-grade hermetically sealed refrigeration compressors and reliable cascade refrigeration to minimize noise and vibration, air cooled. - Basic features with optical / acoustic alarm device, independent of mains power. With no-volt remote alarm contact and 10 mV/K connection for a National Lab temperature recorder. - If a CO2 back-up system is to be used, we must be notified of this when the freezer is ordered so that the necessary connection points can be fitted during production. - Options on request: CO2 back-up system, port hole, additional Pt-100 sensor, temperature recorder, castors, special paint finishes, international voltages/frequencies.