Fresh-key USB is developed to be a premium USB temperature data logger. With carefully selected components, fresh-key USB presents with solid performance since its developed, it has proven records to work in any strict scenarios. Logger type : Single-Use Temperature range : -30 C to +70 C Temperature accuracy : ±0.5 C/0.9 F Temperature resolution : 0.01 C/ F Sensor : Digital sensor(Texus Instruments) Data storage capacity : 14400 readings Shelf life : 18 months Log interval : Customizable,minimum 1 second Log cycle : Customizable,maximum 90 days Start mode : Manual Stop mode : Manual/USB connect/Data Limit Protection class : IP67/NEMA 6 Dimensions : 72mm 28mm 5mm(L W H) Weight : approx.10 g Calibration certificate : Nvlap NIST traceable(United States) Report type : PDF Report source : Self-generated,no software needed