Descriptions: UT333 is a mini digital temperature humidity meter that adopts high-precision temperature and humidity sensing module technology to sample, process data, and display results on the LCD. It uses a calibrated sensing module which reduces bias and increases accuracy. Features: Exquisite and compact design, easy to carry and use. Automatic inductive backlight, humanized design. Temperature measurement range: -10C to 60C / 14F to 140F, with selectable C/F units. Humidity measurement range: 0-99% RH. Maximum and minimum value display mode. Ideal for monitoring indoor farming, animal husbandry, warehouse storage, public facilities, and other applications. Low power consumption chip design. Low battery indication and automatic shutdown function. Specifications: Battery: 3 x AAA 1.5V batteries (not included) Size: 13.8 x 5.3 cm / 5.43 x 2.09 inches Weight: 158g Functions | Range | Resolution | Accuracy Humidity | 099% RH | 0.1% RH | 5% RH (099% RH) Temperature | -1060C | 0.1C | 1.0C Temperature | 14140F | 0.2F | 2.0F Sampling Rate: 0.5s Overload Indication: OL MAX/MIN: MAX/MIN Data Hold: HOLD Unit Conversion: C/F LCD Backlight: Yes Auto Power Off: 5 minutes Low Battery Indication: Yes Working Current: 25mA Power Off Current: 10A Working Environment: Temperature: 040C Humidity: 80% RH Storage Environment: Temperature: -2060C Humidity: 75% RH Key Functions: ON/OFF (Bluetooth): Short press to power on/off; Long press to enable Bluetooth when powered on MAX/MIN: Short press to switch between MAX, MIN, and QUIT modes C/F: Short press to toggle between Celsius and Fahrenheit HOLD/BL: Short press to activate data hold; Long press to turn backlight on/off Package Included: 1 x Temperature Humidity Meter (batteries not included)