Descriptions: UT333 is a mini digital temperature humidity meter which adopts high-precision temperature humidity sensing module technology to sample, processes data, and displays results on the LCD. it uses calibrated sensing module which reduces bias and increases accuracy. Features: Exquisite and compact, easy to carry and measure. Automatic inductive backlight, humanized design. -10~60 ° C /14~140 ° F temperature measurement, can switch ° C / ° F 0-99%RH environment relative humidity measurement. Maximum and minimum value display mode. A great tool for monitoring indoor farming, animal husbandry, warehouse storage, public facilities, and many other areas. Low power consumption chip design. Low battery power indication, automatic shutdown. Specifications: Battery: 3 * AAA1.5V batteries Size: 13.8 x 5.3cm / 5.43 x 2.09inch Battery: 3 *AAA (Not included) Weight: 158g Functions Range Resolution Accuracy Humidity 0~99%RH 0.1%RH ±5%RH(0~99%RH) Temperature -10~60 ° C 0.1 ° C ±1.0 ° C 14~140 ° F 0.2 ° F ±2.0 ° F Sampling Rate 0.5s Overload Indication OL MAX/MIN MAX/MIN Data Hold HOLD Unit Conversion ° C / ° F LCD Backlight Yes Auto Power Off 5min Low Battery Indication 3.0~3.5V Battery 4.5V Current Consumption working mA ≤25mA Power off uA ≤10uA Working Environment temperature 0~40 ° C humidity ≤80%RH Storage Environment temperature 20~60 ° C below humidity ≤75%RH Key Functions ON/OFF (Bluetooth) Short press: power on/off Long press: convert to Bluetooth in the state of power-on MAX/MIN Short press to switch between MAX/MIN/QUIT ° C / ° F Short press to switch between ° C / ° F HOLD/BL Short press to start data hold mode, long press to turn on/off backlight Package included: 1 x Temperature Humidity Meter (battery not included)