Elitech RC-17 USB PDF Temperature Data Logger Recorder

have 3 of these total, $25 each PDF data logger with CE and RoHS certification. I got 3 of these, not really used Technical Specifications Sensor Type Internal Temp Temp Range -30°C ~+70°C (-22℉~158℉) Temp Accuracy ±0.5°C/±0.9°F(-20℃~+40°C); ±1°C/±1.8°F(others) Resolution 0.1°C/°F Data Interface NTC Memory Capacity 16,000 (MAX) Logging Interval 10 seconds to 24 hours Power supply CR2450 button cell Software 1.ElitechLog for macOS & Windows system; 2.Online webpage configuration Report Format Auto PDF report, PDF/EXCEL/TXT via ElitechLog software Logging Mode Stop when full, Periodic record Alarm Configuration LED indicator Protection Class IP67 Certification EN12830,CE,RoHS MPN RC-17 Interface USB Model RC-17 Brand Elitech Parameter(s) Measured Temperature