Description :  TC-4 LCD Refrigerator Freezer Fridge Digital Thermometer Temperature Data Logger   Features :  Temperature Data Logger allows easy monitoring and record temperature sensitive systems、 in transit or in storage of foodstuff、 chemicals、 medicine、 and other products. Especially widely used for all kinds of warehousing、 logistic and cold chain、 such as refrigerated containers、 refrigerated trucks、 refrigerated package、 cold storage、 and laboratory、 ect.   Specification :  Temperature measurement Range: -22\u2109 -185\u2109 \/-30\u2103 to +60\u2103 (for optional external sensor: -40\u2109 -185\u2109\/-40\u2103 to +85\u2103) Temperature accuracy: -20\u2103 to +40\u2103、 !#!amp!*!plusmn;0.5\u2103、 others、 !#!amp!*!plusmn;1.0\u2103 Resolution: 0.1\u2103 Record capacity: 16000 ponits(MAX) Product size: 3.54 x 1.85 x 0.67inches \/ 90 x 47 x 17mm Record interval: 10s - 24 hours adjustable Sensor: Internal NTC thermal resistor Communication interface: USB interface Power supply: Inner CR2450 battery or power supply via USB interface Battery life: in normal temperature、 if the record interval sets as 15 minutes、 it could be used above one year.  \u261e\u261e\u261eDriver Download\u261c\u261c\u261c    Package includeds :  1 x TC-4 Temperature Recorder 1 x USB Cable 1 x External Temperature Sensor 1 x English User Manual   Details pictures :