1. OF PLACEMENT: Powered by 2 x AAA batteries (not included), the humidity monitor has table stand, two magnets and wall-mountable hole on its back. You can place it on the table or any supporting plane object directly, hang it or attach it to the refrigerator or any metal . 2. WIDE APPLICATION: It can be used in bathroom, bedroom, living room, base room, greenhouse, warehouse, baby room, nursery, hatchery cellar, office and every indoor environments. 3. LOW and HIGH RECORDS: With low consumption, hight precision and stability, it can automatically record the high or max and low or min temperature and humidity in 24 hours and you can track the indoor conditions by the humidity gauge data records to a healthy home. 4. WIDE WORKING RANGE: With temperature detection range 32-122 (0-50) and humidity range 10 percent -99 percent , you can get the accurate real time temperature and humidity values to adjust your indoor air condition and environment accordingly. Power Supply:2 x AAA batteries(Not included batteries) Colour:Red Material:ABS Package Contents: 1 x circular touch hygrometer 1 x English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.