Digital Minimum Maximum Thermometer Calibrate Hygrometer with Touch Memory Checking Button 2pcs Blue/Pack.Mieo

Not only measure but record the temperature and humidity. Rear installed with magnetism for being attracted on metal surface.
Be suitable for transportation, medicine & food storage, wine cooler, cigar humidor, incubator, moisture-proof boxes and other equipment which need monitor and record the temperature and humidity.
1). Display temperature, humidity and clock
2). Check the hourly average temperature and humidity records for last 24 hours
3). Memory clean and C/F display conversion
4). Calibration at 75%
5). The blue backlight is on when touch the CHECK button on front
6). Powered by one CR2032 cell battery (pre-loaded)
7). Panel mount and magnetism attraction are compatible
8). Temperature measuring range: 14F~140F
9). Humidity measuring range:10%~99%RH
10).Accuracy: +-2F

+-3%RH (30%~80%RH), +-5%RH for beyond (30%~80%RH)
11) Product Size: D2.36*H0.63 inches
12) Product Tail Diameter: 2.27 inches
13) Mount hole diameter: Between 2.36 inches and 2.27 inches
Packing list: 1 thermometer ( in blue light),1 adhesive metal plate and 1 manual.
FAQ:
1) "No display, No backlight, seems die. How to make it run?"
MIEO: you may try below to recover this problem.
---Take off the battery.
---Don't close the touch button while reload the battery.
---Load the battery correctly (obey the below direction).
There are Positive and Negative pins. Let the Positive pin contacts with battery "+", and the Negative contacts with battery "-".
Don't place both of the Positive and Negative pins under the battery to touch battery "-". Please obey the direction in the manual.