Accuracy

Convenience

Time-limited

Alarm method

Alarm timeliness

Alarm validity

Automatic monitoring

0.2˚C ± 0.1˚C

Achieve 24 hours unattended

5 minutes

Sound and light, platform, information push

10 minutes Continued alarm reminder

Manual monitoring

0.5˚C ± 0.4˚C

Manual review required

6 hours

Refrigerator with sound and light or without

30 minutes or none Need personnel on site