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By certification 
Temperature range: -30 ℃ ~ + 70 ℃ (-22 ℉ ~ 158 ℉)
Accuracy: ± 0.5 ℃ / 0.9 ℉
Resolution: 0.1 ℃ / ℉
Model: 25 days: PDF-25 (interval time: 5 minutes)
Model: 50 days: PDF-50 (interval time: 10 minutes)
Model: 99 days: PDF-99 (interval time: 20 minutes)
Temperature units: ℃ / ℉
Delay Start Time: 20 minutes
Storage time: 1 year
Key functions: Start / Stop / Working status
Display: LED (not started, recording, stop)
Report Type: PDF format
Interface: USB 2.0
Power Supply: 3.0V CR2032 lithium battery
Operating System: WIN XP / 7/8 and MAC
Protection: IP67
Accuracy: ± 0.5 ℃ / 0.9 ℉
Resolution: 0.1 ℃ / ℉
Model: 25 days: PDF-25 (interval time: 5 minutes)
Model: 50 days: PDF-50 (interval time: 10 minutes)
Model: 99 days: PDF-99 (interval time: 20 minutes)
Temperature units: ℃ / ℉
Delay Start Time: 20 minutes
Storage time: 1 year
Key functions: Start / Stop / Working status
Display: LED (not started, recording, stop)
Report Type: PDF format
Interface: USB 2.0
Power Supply: 3.0V CR2032 lithium battery
Operating System: WIN XP / 7/8 and MAC
Protection: IP67
