For organic substances and valuable samples, which have to be stored safely for long periods at low temperatures. 4.3″ touchscreen control panel with digital display for entering and retrieving all safety-relevant values Stainless steel interior Adjustable limit values for overheating and insufficient temperature alarm Preservation of display and alarm functions, even during power outages (battery buffering up to max. 35 hours) Integrated data logger incl. 1 GB SD card (sufficient for approx. 2 years) for storing temperature and alarm data. The temperature of the usable space is recorded every 120 s. Data can be transferred via USB stick (not supplied) Duct for inserting temperature gauges and pressure compensation opening ID 13 mm available Lockable door With USB, RS 485 and Ethernet interfaces Permissible ambient temperature range of 15 to 28 °C Shipping costs within Germany: incl. delivery free domicile (inside the first door). Deep freezer Versafreeze series VF 15040 deep freezer Cooling temperature adjustable from 0 to -40 °C Cooling time from 20 °C to -40 °C in 5 h, from -40 °C to 0 °C in 12 h