Fridge-tag® 2L Freezer Vaccine Data Logger with Alarm Fahrenheit / Celsius -22° to +131°F (-30° to +55°C) Glycol Bottle Probe Battery Operated (1014796_EA) 1/EAVaccine data logger for vaccine freezer: Alarm goes off when temperature goes up or down by 15 C for 60 minutes (factory alarm set; non configurable). Every device is calibrated and NIST ILAC traceable. Technician daily verification log. Removable probe bio safe glycol water probe medium True seal flat ribbon probe cable No software needed for computer interface 30 days of minimum and maximum temperature history 43,200 temperature observations monthly