... , Outer is painted steel panel 4. Front opening lockable door with full height handle 5. 155mm foaming insulation 6. ... Vacuum release port 7. Inner 3 shelves Stainless steel with inner door8. Imported Danfoss compressor, Tow compressors parallel ... or low temperature alarm, Power failure alarm, Low battery alarm, Door ajar alarm, Filter blocking alarm, system failure alarm 15. ...