With explosion-proof interior acc. to EU Directive 2014/34/EU ("ATEX Directive"). Classification of the interior according to II 3 G Ex ec IIC T6 (declared as zone 22) for flammable substances in closed containers which could form explosive atmospheres. General information for all models: Cooling temperature is adjustable from -9 to -30 °C Digital temperature display Resolution: 0.1 °C (to -19.9 °C) or 1 °C (from -20 °C) Static cooling Temperature constancy ±5.0 K Operation via three keys, self-explanatory/language-supported menu flow, nine languages available Memory for min./max. temperatures, recording duration 999 h or 42 d. With the option to reset the time and min./max. temperature for a new recording (after checking the temperatures) Feedthrough for external sensors (Ø 10 mm) With lockable door With alarm relay, potential-free contact There are additional transport costs for delivery to the point of use. We are happy to provide you with these on request. Deep freezer, explosion-proof Performance SFFfg series Models with glass shelves