Description: This digital thermometer hygrometer is perfect to measure air temperature and humidity. Designed with small size and light weight for portability and easy operation. LCD screen displays the measured value in max./min., accurate and easy to read. Widely used for food storage, medical treatment, public health, laboratory, teaching experiment, plastic greenhouse and more. Features: With backlight, manually turn on or off. -10~60 / 14~140H environmental temperature measurement range, support / H shift 0~99%RH humidity measurement range, with overload indicator. Support for data hold. Low energy chip and auto power off function make this meter energy-saving. Powered by 3pcs AAA batteries, with low battery indicator. Specifications: Condition: 100% Brand New Mode Number: UT333 Material: Plastic Color: Red + Black Power Supply: 3 x AAA Batteries (not included) Size(L x W): approx. 14 x 5cm / 5.51 x 1.97inch Weight: approx. 129g Function Range Resolution Accuracy Note Humidity Measurement 0~100.0%RH 0.1%RH 5%RH Under Normal Temperature Temperature Measurement -10~60 0.1 1.0 Under Normal Humidity 14~140H 0.2H 2.0H Sample Rate 1 second Once per second Overload Indicator 100%RH/OL MAX. Humidity Display: 10%RH display OL if temperature is below -20 or more than 60 Max./Min. Measurement MAX./MIN. Display MAX/MIN Data Hold HOLD Display HOLD Unit Shift /H Display /H Backlight BL Manually turn on/off Auto Power off 5 minutes Auto power off if there is no operation lasting 5 minutes can be set as non auto power off Low Battery Indicator 3.0~3.5V Display symbol of low battery Package Included: 1 x Digital Thermometer Hygrometer(Battery not included) Optimum Environmental Temperature / Humidity Reference Value: 45~75%RH, 15~25: optimum environenment for human body 40~70%RH: habitable room 40~60%RH: libraby, art gallery, museum 45~60%RH: computer room, communication room 40~60%RH: agricultural material, textile storage 50~60%RH: dairy products storage 60~70%RH: fruit storage 30~50%RH: optimum disease prevention or healing environment Note: 1. Please allow 0-2cm 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.