PDF Report, No Software Required: USB port, connect the logger to a computer, you'll get an automatically generated PDF report without any software; Press the button for 5 seconds to open, 30 minutes start-up protection can improve measurement accuracy Single Use Temp Data Logger USB: Measuring range is -30℃ to 60℃ (-22℉ to 140℉), accuracy is ±0.5℃(-20℃ to 40℃); Logging interval:10 mins (60 days), 10000 records data capacity; Temperature alarm:Less than 2℃(35.6℉) or Greater than 8 ℃(46.4℉) LED Temperature Alarm: The LED light flashes every 10 seconds; If the OK light flashes,it means the ambient temperature is normal; if the ALARM light flashes, it means the temperature is out of range; Helping you to detect abnormal conditions in time IP67 Waterproof: With protective packaging, the temperature logger can prevent the penetration of moisture and dust and always remain dry; Note: Do not tear the packaging before downloading data to maintain the IP67 waterproof rating Color: Blue Material: Electronic components Package Contents: 20 x Temperature Data Logger Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.