Refrigerated containers is an intermodal container used in intermodal freight transport that is certainly refrigerated for transportation of temp sensitive cargo. While a reefer can have an integral refrigeration device, they rely in external power, from electrical energy points at the land based site, a container dispatch. When being transported within the road on a trailer they can be powered from diesel powered generators which adhere to the container whilst on road travels. Refrigerated containers are prepared for controlling temperature amounts between plus or maybe minus 25 degree Celsius.