This data logger is provide high accuracy for temperature and humidity. Mainly used for temperature and humidity recording during storage and transportation of foodstuff, medicine, chemicals and other products. Features: 1. High accuracy for temperature and humidity. Data correctable(can set the temperature and humidity in software at any time according to the need). 2. 16000 points large permanent data memory and easy to download data management to computers through USB interface. The data could be queried, saved, printed and exported in Word/Excel/TXT format. 3. Buzzer alarm, if the temperature and humidity data exceeds the set value, it will immediately send a buzzer alarm. 4. Two kinds of power supply for long life service, replaceable lithium battery(not included) and USB cable. 5. Temperature and humidity recording can be widely used in all links of warehousing, logistics and cold chain, such as refrigerated containers, refrigerated trucks, refrigerated package, cold storage, laboratory, etc. Specification: Condition:100% Brand New Material: ABS Color: As Pictures Shown Temperature Range: -40 ℃~+85 ℃ Humidity Range: 0%~99%RH Temperature Accuracy: -30℃~+60℃, ±0.6℃;others, ±1.2℃ Humidity Accuracy: ±3%RH(25℃.20~90%RH), others, ±5%RH Resolution: Temperature 0.1 ℃; Humidity 0.1%RH Recording Capacity: RC-4HC 16000points (MAX) Record interval: 10s~24hour adjustable Communication interface: USB interface Power supply: inner CR2450 battery(Not inlcuded) or power supply via USB interface. Size: approx.84*44*20mm/3.3*1.7*0.8in Weight: Approx.94g/3.3oz Package list: 1 * Temperature logger(Not inlcuded Battery) 1 * USB Cable 1 * External Sensor 1 * User Manual Note: 1. Please allow 0~1 inch error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. .3. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.