FlashLink Certified Vaccine PDF Data Logger with Glycol Sensor, WHO Prequal. E006 Temp Monit. Device, Temp +40C to -50C, Low/High Alarms; Includes 2-yr ISO 17025 Calibr. Cert. (A2LA), 1yr NIST Calibr. Cert., & Manuf. Cert. of Compliance 40527-01 (EA)