【Wide Transmission Range】The hygrometer thermometer is linked with a radio transmitter which provides strong wireless signal penetration (433MHz frequency). ) in the open area, the signal can be received quickly and in time in the transmission area. 【Multi-function】indoor and outdoor thermometer for healthy life, measures temperature and humidity values ​​in indoors and outdoors. Mainly used to measure temperature and humidity in homes, offices, workshops, etc. 【Accurate Reading Large LCD Display】: Large LCD screen for easy and clear viewing. Indoor Temperature (0-60°C/32-140°F) / Outdoor Temperature (-40°C-60°C/-40°F-140°F), Humidity (10%-99%) and accuracy can reach ±1°C / ±5% automatically activate data every 60 seconds (about 30 minutes to stabilize the sensor). 【Easy to use】: It is easy to change with the button on the top on temperature units in Celsius or Fahrenheit. Please note that batteries need to be re-installed after changing °C / °F temperature units. 【Portable Design Easy Installation】: With wall mount and retractable stand on the back, easy to mount on the wall or to put on the table. Digital hygrometer thermometer is an ideal life partner for your family. Note: To avoid permanent damage, please note the battery polarity before putting in the batteries. Never immerse the product in water, which will damage the product. Change the Celsius/Fahrenheit unit first (the default setting is Celsius) before inserting batteries. Please disassemble the batteries first to change the device when the device is working. Do not clean the product parts with benzene, thinner or other chemicals. If necessary, clean with a soft cloth. Please replace the batteries if the screen becomes dim. Note: Batteries not included Size: as shown Quantity shipped: 1 lucky meet Note: The data is all manually measured, please allow 1-3cm error, due to the difference in light and display, there will be some difference of color, the actual object received shall prevail.