Description: It is a wireless indoor & outdoor monitor temperature work with waterproof external sensor that can be easily installed on the wall or stand on the desk. The clear and simple LCD display allows users to read real-time IN/OUT data temperature at a glance. the temperature tolerance is within +/- 1 and is outdoor working range of temperature is -30 ~ 60 while the internal temperature range is 0 ~ 50 . The IN / OUT temperature zones are typically ordered by two different silk print colors for easy identification. It is worthwhile to keep one at home with the fashion design and actual cost. Features: Large numbers in bold to be seen across the room Display of internal and external temperature / Switchable External temperature trend Max/Min internal and external temperature record data Low power indicator for both the main unit and the external sensor MOUNTING OPTIONS: Table, hanging wall mounting hanging hole Specifications: for Shell Color: White Indoor Temperature Range: 0~50 Outdoor Temperature Range: -30~60 Accuracy: 1 Resolution 0.1 Powered Supply: Main Unit: 2 x AAA Batteries (Not Included) Sensor: 2 x AAA Batteries (Not Included) Quantity: 1 Set Note: Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Contents: 1 x Indoor Outdoor Thermometer 1 x External Sensor 1 x User Manual